Scientists Use the Dark of Night to Generate Clean Energy
By Marlene Cimons
Scientist Aaswath Raman long has been keen on discovering new sources of clean energy by creating novel materials that can make use of heat and light.
And lately, he has focused on developing better cooling systems, perhaps inspired by childhood summer visits to his grandparents in Mumbai, where the temperature can hover at 100 degrees F with killer humidity — and where his family refused to add an air conditioner.
"It's not unusually different from Miami, I suppose — just a bit challenging without air conditioning," he said.
His interests in clean energy and cooling led him to learn about a phenomenon called "radiative cooling," which is when objects facing up shed heat into the sky after dark, cooling the surrounding area. This "aha" moment also recently led to his developing a pollution-free source of electricity.
"I was blown away by how this natural, passive cooling mechanism was ubiquitous, but something I'd never heard of," he said.
Even more surprising was learning that the concept was centuries old. Ancient Middle Eastern civilizations–especially the Persians–used radiative cooling to make ice, pouring water into a pool as the sun set, collecting the frozen chunks the next morning. Even though the ambient temperature stayed above freezing, the pool would grow more cold than the surrounding air as the water radiated heat into the sky. During the day, heat from the sun would have kept the water warm, but at night, it grew colder and colder until it froze over.
Raman, an assistant professor of materials science at engineering at UCLA, wanted to take advantage of this phenomenon to produce clean energy. So he and his colleagues designed a device that can harness nighttime cooling to generate a small amount of power.
For now, the device is too costly and generates too little electricity to compete with other forms of clean energy. To power a 3-watt LED lightbulb, the generator would need to be 1300 square feet. Raman said he believes scientists could get that number down 60 square feet, and they could also lower costs enough to make it useful in remote areas disconnected from the power grid. A future iteration of the device could allow people without access to electricity to turn on a lightbulb, charge a cell phone, or power some other small device at night.
"There are also low-power sensors: think monitoring oil pipelines, or weather and climate monitoring in the Arctic," he added. "The combination of remoteness and low-power needs make them a great fit for this device, especially in polar, northern regions where you have limited or no sunlight for a large fraction of the year."
His invention is deceptively simple. It looks like a small disc propped up on four legs. The side facing up radiates heat into the night sky, while the side facing down is warmed by the surrounding air. Sandwiched in between these two surfaces is a thermoelectric generator, which uses the difference in temperature to produce power.
A description of the research, co-authored with frequent collaborator Shanhui Fan, a professor of electrical engineering at Stanford University, was published in the journal Joule.
"This is an excellent demonstration of how the night sky can be used as a thermodynamic resource to do something useful," said Jeremy N. Munday, professor of electrical and computer engineering at the University of California Davis, who has proposed using radiative cooling to combat climate change. He said that more research is needed to know if the technology could someday provide a workable alternative to wind or solar power, for instance.
Raman has also looked for ways to take advantage of radiative cooling during the day. For a long time, most experts had dismissed this as improbable, insisting that the cooling effect only worked at night, but Raman was convinced he could create substances that could take the concept of radiative cooling and make it work during the day.
Ultimately, he and his colleagues created ultra-thin, hair-like materials — known as metamaterials — that successfully produced daytime cooling by acting as a mirror, reflecting the sun and heat back into the sky during the daytime hours, essentially removing the heat. It's the same principle at work as natural nighttime radiative cooling, but with a little boost from materials created by the scientists.
The scientists have since incorporated this material into panels that use radiative cooling to improve the efficiency of existing air conditioning and refrigeration systems, helping to save energy. This is an important development as climate change will fuel more stifling and unrelenting heat waves, so the need for cooling–especially during the day–is going to increase, upping demand for electricity.
Initially, Raman did not spend a lot of time thinking about how to use radiative cooling to re-engineer existing air conditioners and refrigeration systems — and then, always up for a challenge, he changed his mind.
"It always seemed like such a mature and well-developed field," he said. But, then, Raman asked himself: "Was there anything we could do to make it better? Turns out, yes!"
Reposted with permission from our media associate Nexus Media.
By Karin Jäger
"They begin on a fall night, preferring the light of a full moon … Driven by the currents, they're pulled to the mouth of the river and out into the ocean," writes the WWF, rather poetically, of the European eel's long journey from the rivers of Central Europe to the far reaches of the Atlantic Ocean.
Think Beyond Borders to Protect Species<p>When an animal crosses so many territories, how can it be protected? That's where the Convention of Migratory Species (CMS), sometimes known as the Bonn Convention, comes in. Every three years, the European Union and an additional 129 countries signed up to the CMS meet to discuss cross-border measures to protect eels and other animals on the move.</p><p>In February 2020, the convention met in Gandhinagar, India, where 10 migratory species, including the Asian elephant, jaguar and the oceanic whitetip shark, were added to the international wildlife treaty for the first time.</p><p>Nature's travelers face specific challenges, particularly as humans encroach more on animal habitat and carve up the landscape with roads and settlements, say experts. Wildlife needs to be taken into consideration at the planning stages of such infrastructure projects.</p><p>"Improving connections between habitats is important if we want to stop or even reverse extinctions," said Arnulf Köhncke, an ecologist with conservation group WWF. "You need to look at where an area cuts through as few migration routes and habitats as possible and plan and implement corresponding, cross-border (wildlife migration) corridors."</p><p>Such planning also requires cooperation between states.</p><p>Several bilateral agreements to protect migratory species already exist within the framework of the Bonn Convention. For instance, Chile and Argentina have committed to saving the endangered south Andean deer, which moves up and down the South American Andes, crossing through both countries as it does.</p>
Unprecedented Global Biodiversity Loss<p>Not all animals move across borders of their own accord. International trade in animals also requires international protection efforts. In the case of the eel, considered a delicacy from Europe to Asia, criminals smuggle young European "glass eels" in and out of countries, although international trade is strictly regulated under CITES, an international treaty governing trade in wildlife.</p><p>The trade is in animals caught in the wild. Breeding eels in captivity has so far proved impossible because of their complicated life cycle, which until recently, scientists still knew little about.</p><p>It's a lucrative gig and one that is driving down eel numbers. Although, the trade is regulated, enforcement is often lacking. People should avoid eating the animals, according to WWF. And we should avoid consuming too much fish and meat in general to halt species loss, says the conservation group.</p><p>Veronika Lenarz, who works with the secretariat of the Bonn Convention, agrees. But several major countries, like the USA, Russia and China, aren't party to the convention, while Japan refuses to sign up because of its whaling industry.</p><p>"We are in a crisis that threatens global biodiversity," said Lenarz.</p><p>In a major assessment of the world's wildlife published in September 2020, the UN warned of "unprecedented biodiversity loss" and said the global community had failed to fully achieve any of the 20 biodiversity targets set by the international organization 10 years ago.</p><p>While migratory animals are also impacted, not enough is known about many of the species to gauge to what extent. Researchers estimate there could be anywhere between 5,000 to 10,000 migratory species, ranging from storks and butterflies, to dolphins and wolves.</p>
Climate Change: An Ever-Present Threat<p>Regions in which the climate is changing most rapidly and on a large scale present a particular danger for migratory species. The animals, following a deeply embedded evolutionary instinct, will search for seasonal habitats in search of food and shelter. However, food is increasingly scarce in these places due to climate change.</p><p>Some animals are adapting. Compared to 20 years ago, fewer migratory birds are flying to their wintering grounds. But because these nomads are dependent on the many different habitats they use as resting points on their journeys, they are more vulnerable than their settled counterparts. By staying put, they're also in increased competition for scarce winter food supplies.</p><p>And while animals can adapt, not many can keep up with the pace of climate change.</p><p>"Reports from the UN climate group IPCC show that only a few species can move with the speed of climate change. And often alternative habitats are already occupied by humans," said Köhncke from the WWF.</p><p>The climate crisis and species loss shouldn't be viewed as unrelated issues, because both are damaging to the planet, added Köhncke.</p><p>"Migratory species help to maintain life on Earth. They contribute to the structure and functions of ecosystems as pollinators and seed dispersers, deliver food to other animals and regulate the number of species," said Köhncke. </p>
Creating Conditions to Thrive<p>Ensuring the conditions for the survival of these species should be considered when planning measures for dealing with the consequences of climate change, he added, referring to the WWF study "Wildlife in a Warming World."</p><p>Published in 2018, the study found that around 50% of species in some of the world's key natural regions, such as the Amazon, could disappear if climate change continues unabated.</p><p>Reindeer for instance, some of which migrate in the northern hemisphere, are no longer able to find enough food. Usually in winter, the animals clear snow with their hooves to uncover the lichens and moss they feed on. But temperatures now vary wildly, causing snow to melt or fall as rain instead. When the ground cools again, ice forms and the reindeer cannot get to their grub. </p>
Simple Solutions to Protect Endangered Species<p>Looking to the example of Mexico, the International Fund for Animal Welfare (IFAW) has shown protecting endangered migratory species doesn't have to be complicated.</p><p>Industrial farming has contributed to the jaguar's habitat shrinking by 50% in South and Central America in the last century. As a result, they began roaming near villages looking for food and attacking villagers' dogs. People retaliated by killing them. The IFAW hired community members to build dog houses, meaning the canines are no longer out roaming at night when they could run into big cat predators.</p><p>However, with the global conservation failures of the past decade looming, all eyes will be on the UN Biodiversity Conference scheduled to take place in China in 2021 and whether it can pull off a plan for protecting migratory and non-migratory animals like.</p>
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Do you feel embarrassed due to the foul odor coming from your mouth? Or your oral hygiene isn't as good as before, and you are suffering from gingivitis (inflammation of gums)?
Well, these oral problems are skyrocketing, and even young people are suffering from oral issues that result in a lack of confidence.
It's common to change your toothpaste by seeing the TV commercials that claim to free you from bad breath or sensitive teeth, but these products don't always work.
Fighting oral issues isn't that easy, even if you religiously follow what your primary school teacher has taught, to "Brush two times a day!"
Well, there is a much-hyped supplement in the market that claims to help you fight all of these oral issues: The Steel Bite Pro.
Steel Bite Pro is an oral supplement that claims to cure bad breath and other such oral issues like sensitivity and gum problems.
But does the supplement really work, or is it just like the useless toothpaste that you tried before? Let's find out in this review.
Who Should Use Steel Bite Pro?
The best part about Steel Bite Pro is that anyone can use the supplement to get rid of oral issues. The supplement contains natural ingredients such as turmeric, zinc, alfalfa, jujube seeds, and much more, so there are no chemicals at all.
No matter whether you are 20 or 60, you can use this supplement to overcome oral issues and get the confidence back that you are missing due to bad odor and sensitive teeth.
Steel Bite Pro Review: Overview of the Supplement
Steel Bite Pro is an all-natural supplement that contains a mix of natural supplements to rebuild your gums and teeth.
The supplement contains 29 different foods that help you reduce the gum pain and other dental problems you have been facing for years.
More than 55,000 people have used Steel Bite Pro till now, and the results of the supplement are pretty impressive. Furthermore, the supplement is prepared in an FDA-approved facility in the USA.
It is available in the form of pills that you can consume anytime, so using the supplement is incredibly convenient. There are numerous benefits of using the Steel Bite Pro as it solves a plethora of dental problems.
Pros and Cons: Steel Bite Pro
To understand the supplement better, it is essential to know about its pros and cons.
Convenient to Use
The dietary supplement is convenient to use as it comes in the form of pills. You can take the pill anytime, even when you are in your office or somewhere else. Now there is no need to use multiple kinds of toothpaste and splurge money by visiting a dentist.
All the ingredients present inside the supplement are natural, and there are no chemicals that can harm your teeth or gums.
When you compare the cost of 1 bottle with the cost of a special toothpaste with the fee that your dentist charges, Steel Bite Pro will seem much more affordable. The supplement is available in multiple packages, so you will find it affordable to use.
No Side Effects at All
There are no side effects to using Steel Bite Pro, so you can rest assured that you won't face any headaches or other issues while curing the oral issues. The reason why Steel Bite Pro has no side effects is due to its natural ingredients.
Designed by Experts
The supplement is designed by experts that have been in the industry for years.
No Additional Medicines Are Required
When you are using Steel Bite Pro, you can avoid using other medicines that you have been taking to cure oral issues.
Attacks on the Pain
There are several ingredients present in Steel Bite Pro that attack tooth and gum pain so that you get some instant relief with the supplement.
Comes With a Money Back Guarantee
The supplement comes with a 60-day money back guarantee, so you can claim a full refund if you find the supplement isn't working for you, or if it isn't doing what the manufacturer has promised.
You Can Purchase It From the Official Site Only
The supplement is only available for purchase from the Official Website. Sometimes the supplement gets out of stock, so you have to wait for it to get back in stock.
A Single Bottle Costs More
If you buy a single bottle of the supplement, it'll cost you more than other packages with multiple bottles.
Ingredients in Steel Bite Pro
All the ingredients present in Steel Bite Pro are natural and have proven benefits for humans. Here is a list of supplements explained in detail and how they can benefit you if you start using Steel Bite Pro.
As per a study, there are innumerable benefits of using turmeric on your teeth. The natural herb has antimicrobial properties that help remove the plaque effectively from the teeth, exterminate bacteria and help cure sensitivity.
Moreover, turmeric is good for fighting oral inflammation issues. When applied on teeth, the ingredient gives instant relief from pain and is effective in curing mouth ulcers as well.
Berberine is a natural herb with proven antioxidant power to help you get rid of microorganisms developing inside the mouth. Furthermore, the ingredient has anti-inflammatory properties and is good for curing oral issues caused due to viruses and bacteria.
It is another natural ingredient that is used in a range of health supplements due to its healing power. The ingredient naturally heals the gums and the damage caused to the teeth by bacteria and microorganisms.
As per a study, it helps reduce the infection, oral pain, and cures other dental issues.
Your liver has a significant impact on your oral health, and that's where milk thistle works. The natural ingredient eliminates toxins from the liver and detoxifies your mouth as well.
Here is a study that proves how milk thistle is beneficial in detoxifying the liver.
The decaying of teeth is the initial phase of damage caused by bacteria thriving inside your mouth. Alfalfa works by reducing tooth sensitivity drastically and repairs the tooth decay caused by the bacteria.
It even stops the bacteria from growing further so you can expect good oral health.
A lot of natural supplements for teeth contain ginger because of its benefits on the teeth and the stomach. This ingredient present in the Steel Bite Pro reduces nausea and inflammation.
As per this study, there are umpteen other benefits of ginger as well, such as it maintains the pH inside your mouth.
Jujube seeds are good for boosting the immunity. Also, the ingredient has excellent antioxidant properties and is rich in Vitamin C, which is beneficial for the teeth and overall oral health.
Dandelion is a natural ingredient extracted from herbs. The ingredient is rich in minerals and has immense benefits such as fighting the bacteria and preventing the infections occurring inside your mouth.
Zinc is essential for teeth, and that is why many toothpaste brands advertise that their product contains a good amount of zinc. Further, zinc is a natural immunity booster and fights against bacteria to prevent gum disease and cavities.
Moreover, zinc repairs the enamel on your teeth that's damaged due to toothpaste or any other reasons. Here is a study that shows the benefits of zinc for your teeth and mouth.
Chicory root acts as a catalyst and increases the effectiveness of other ingredients. The reason why you get instant relief from pain after using Steel Bite Pro is due to the presence of chicory root in the pills.
Bacteria result in bad odor and can create cavities in the teeth. Furthermore, some bacteria result in tooth decay and harm the gums. The celery seeds fight these bacteria and prevent further growth.
To stay healthy, the teeth need to absorb the minerals present in the saliva. When your teeth are damaged for any reason, they stop absorbing the minerals, and the damage continues further.
Yellow dock helps the teeth to absorb the minerals while reducing the inflammation. Various studies have proven the efficacy of yellow dock for teeth and gums, and it is a natural and effective ingredient to keep the teeth healthy.
Raspberry, Chanca Piedra, and Artichoke
These three natural ingredients have similar properties and contribute a lot to the effectiveness of Steel Bite Pro. The ingredients have good amounts of vitamins and minerals, including Vitamin K, Vitamin C, magnesium, phosphorus, and folate.
The purifying agents will remove bacteria and other impurities from the mouth so that the other ingredients work well by repairing the teeth and gums.
The worst thing about oral issues is the pain that you have to go through. Steel Bite Pro claims to help with the pain as it contains feverfew, which is a natural pain reliever. The ingredient suppresses oral and dental pain so you will feel better instantly.
As per a study, there are some other benefits of feverfew, because it is a medicinal plant that suppresses other pains as well. Also, there are no side effects of feverfew at all.
The root of the burdock plant comes loaded with antioxidants that improve the gum health and the overall health of your mouth.
The best thing about Steel Bite Pro is that the ingredients are present in exact quantities, so you can rest assured that there will be no side effects. Every ingredient is tested in the labs for its efficiency, and that's what makes the Steel Bite Pro a considerable option if you want to improve your oral and dental health.
How Does Steel Bite Pro Work?
It is crucial to understand how the supplement works so that you can decide whether to invest in it or not. Below is a step by step process that will help you understand Steel Bite Pro on the go.
When you start consuming the supplement, the pills break down in your mouth. The ingredients then mix with saliva to perform their particular actions.
The ingredients fight the bacteria and heal issues such as wounds while reducing the inflammation caused in the mouth.
The supplement cements the root of the teeth so that there are no further oral and dental issues. Also, it heals the gums and repairs the enamel to provide you relief from sensitivity.
The minerals present in these ingredients strengthen the crown area of the teeth while repairing the cracks so that the damage can be stopped.
The supplement also has some impact on your overall health as the ingredients detoxify the liver by flushing away the toxins.
Consuming the supplement regularly will help you maintain the shield on the teeth that fights against bacteria and microorganisms. Also, it improves the condition of the teeth and curtails bad breath.
The working of Steel Bite Pro is really simple, as there are no complex ingredients present in the supplement. It is easy to use, and all you have to do is consume the pill regularly to keep your oral and dental health up to the mark.
Benefits of Steel Bite Pro
There are many benefits of using Steel Bite Pro since it is an all-natural supplement that has no side effects at all. Here are some benefits you need to consider before buying it.
Prevents Bleeding and Improves Gum Health
The reason why your teeth bleed is due to the loose gums. The space between the tooth and the gum results in bleeding, and that's where Steel Bite Pro helps. The supplement tightens the gums so that there is no bleeding at all.
Whitens the Teeth Naturally
The ingredients present in the supplement, such as zinc and milk thistle, whiten the teeth naturally. There is no need to invest in expensive teeth whitening toothpaste if you are using Steel Bite Pro.
Reduces Bad Breath
The supplement contains ingredients that improve the overall health of the teeth, and it automatically reduces bad breath.
Helps Cure Tooth Pain
Steel Bite Pro has feverfew, which is a natural pain reliever ingredient. The ingredient cures tooth and gum pain and can have instant results after you consume Steel Bite Pro.
Side Effects of Using Steel Bite Pro
You may find it surprising, but Steel Bite Pro has no side effects at all as the supplement contains natural ingredients and has exact quantities so that there are no ill effects on your health. If you keep using the supplement as prescribed, then it can have some excellent results.
Who Should Refrain from Steel Bite Pro?
Steel Bite Pro is an all-natural dietary supplement to improve your dental and oral health.
Anyone can use the supplement, including pregnant women and breastfeeding mothers. There are no harms of using the supplement.
However, it would be great to consult a doctor before using the supplement to find out if you are allergic to any of the ingredients.
Dosage and Tips to Start
To get the most from Steel Bite Pro, you should consume two pills with water every day. Take both capsules together anytime that's convenient for you.
To get the best results, follow a brushing regime, and massage your teeth regularly with some good-quality oil to increase the effectiveness of the pills.
Where to Buy Steel Bite Pro, and Guarantees?
You can only buy Steel Bite Pro from the Official Site, as the supplement is not available anywhere else for purchase. You can choose from three available options:
●1 bottle (60 pills) $69
●Three bottles (180 pills) $117
●Six bottles (360 pills) $294 (Best Deal)
You get a 60-day money back guarantee with all the packages, no matter if you go for one bottle or six bottles. You are eligible to claim the full refund within 60 days of the date of purchase.
Steel Bite Pro Reviews: Closing Thoughts
After this definitive review, it will be easier for you to find out whether you should use Steel Bite Pro or not. The supplement contains a mix of 29 natural ingredients that have proven benefits and are tested in labs.
It is essential to get rid of oral and dental issues before things get out of control and you have no option left despite visiting a dentist.
Getting a good quality supplement is essential, so Steel Bite Pro is a viable option if you need a supplement with no side effects.
Anyone can use this supplement irrespective of age, sex, and medical conditions. Lastly, buy the supplement only from the official site so that you can easily claim the refund if required.
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Along the Atlantic coast, ghost forests provide haunting signs of sea-level rise. These stands of bleached and broken tree trunks are all that remain after salty water inundates a forest.
Matt Kirwan is with the Virginia Institute of Marine Science. He says ghost forests are not a new phenomenon, but they're moving inland faster as seas rise.
"Eventually they'll fall apart and become stumps surrounded by marshland," he says. "And so when you see a ghost forest now, you're seeing where the marsh will be in the future."
Marshes are valuable ecosystems, so in some ways, that's positive.
"Ghost forests are a surprising indicator of ecological resilience in coastal systems," Kirwan says. "They mark how marshes naturally migrate in response to sea-level rise."
But that migration comes at a cost.
"Places that people have lived for hundreds of years are becoming too wet and too salty to grow crops on, in some cases," Kirwan says. "And of course, the forest resources are being lost. And in some cases, people are forced to move from their homes as the land becomes too flooded."
So ghost forests have become eerie symbols of rapid change.
Reposted with permission from Yale Climate Connections.