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The Beginner's Guide to Electric Cars
By Emily Long
Electric vehicles (EVs) are getting cheaper — so whether you're looking for a way to save on the hassle and cost of gas, shrink your carbon footprint, or simply zip around in a new Tesla, there are lots of reasons to consider a hybrid or electric car.
But before you go electric, there are a few decisions you have to make — and some planning you need to do — to make sure the car you buy fits your driving needs. Here are a few things to consider before you make the switch.
Decide Whether to Go With a Plug-In Hybrid or Full EV
While a conventional hybrid (HEV) relies on its gasoline engine and a small battery to work in tandem, a plug-in hybrid (PHEV) can operate on its battery alone — and burn no fuel — for a limited number of miles before the engine starts up to help.
If you never plug your PHEV in, it'll act just like a regular hybrid with the engine and battery trading off. So while you can charge your plug-in hybrid to get the benefits of battery-only driving over a short distance, you don't have to.
A full EV, on the other hand, relies solely on its battery for power — which means it has to be charged regularly.
Calculate Your Costs
There are a few elements to comparing the cost of an EV versus a conventional car. One is the cost to drive your vehicle off the lot. EVs are still more expensive up front: $55,600 compared to an industry median of $36,600. The median cost of a PHEV is somewhere in the middle (around $46,000).
If you install Level 2 home charging equipment, that'll add to your upfront cost (more on that in a minute).
But the real difference is in long-term costs, which vary widely based on factors like the car make and model; gas and electricity prices where you live; when and where you charge your EV; maintenance costs; and how much you drive.
For example, it's likely that your energy costs will be lower with an EV (electricity) versus a conventional car (gas) and somewhere in the middle with a PHEV. Use a calculator (like the FuelEconomy.gov's Plug-in Hybrid tool and eGallon comparison) to get a ballpark figure.
Install a Charger at Home
Depending on where you live, you may be able to rely on public charging stations to keep your EV's battery full. But many electric car owners say that it's much easier and more convenient to install a charger at your home if you're able. Your vehicle is likely to spend the largest chunks of idle time parked in your garage or driveway, so if you can charge there you'll save yourself the hassle of waiting at a station.
If you live in an apartment or have to park on the street or in a public lot, you may be out of luck on this (unless you can convince your landlord or property manager to install charging equipment).
Setting up home charging is pretty straightforward. You can plug a Level 1 charger right into a standard 120V outlet, though this will juice up your vehicle very slowly (2–5 miles per hour, according to Energy Department estimates).
A Level 2 charger uses 240V, costs anywhere from a few hundred dollars to $1,000 or more to install, and works much faster — adding anywhere from about 10 to 20 (or more, for some models) miles of range per hour of charging. You can install this type of charger yourself or hire an electrician. Make sure you get the right parts for your vehicle. Tesla, for example, has a specific hardware and installation guide for its cars.
Take Advantage of Free Charging (and Downtime)
Charging at home will add a little bit to your electricity bill, and some charging stations do require you to pay for juicing up your EV. But there are lots of ways to charge for free.
For example, your office may provide charging stations for employees so you can leave your car plugged in for part of your workday. Some hotels, restaurants, and stores offer charging for patrons. You can also find nearby public charging stations that are free using maps like ChargePoint and PlugShare (which have filters for paid vs. free stations).
Note that public charging stations often have time limits (similar to parking restrictions). Make sure you check signage and observe any posted rules.
Plus, you can use any time you're not driving — and any location where you can plug into a 120V outlet — as an opportunity to charge (at your friends' homes, at your Airbnb, etc.).
Plan Your Driving Routes Ahead of Time
Your vehicle's range may be one of the biggest limitations to consider before you buy. Most EVs have a range of fewer than 300 miles, which makes longer trips difficult unless you can find charging stations along the way. PHEVs have very short driving ranges per charge — generally enough for commuting or running errands — but will switch to gas when needed.
Since there are far more gas stations than charging stations, driving a full EV over longer distances requires some planning. Google Maps shows you nearby stations and what kind of equipment is available if you search "EV Charging" or "EV Charging Stations." Apps like ChargeHub and PlugShare offer similar mapping features.
Depending on where and how much you drive, an EV's range may be plenty. But if you travel a lot, you may end up frustrated with charging stops and route planning if an EV is your only option. If charging stations are few and far between, if there's a line of cars already waiting, or if you simply don't want to stop for longer than a lunch break, this could get really old, really fast.
A possible workaround: if you road trip less frequently, rent a car as needed for distances beyond your EV's range. Or go with a PHEV, which can switch to gas for longer journeys.
Use the Right Charging Equipment
If you have to charge your car away from home, make sure you use the right combination of charger and plug. Most vehicles have a standard J1772 port that connects with a Level 1 or Level 2 charging unit. Some cars can also connect to faster Level 3 charging equipment using one of a few different connectors (called CHAdeMO and SAE Combo).
Teslas can hook up to proprietary Supercharger stations, though Tesla also has J1772 and CHAdeMO adapters for stations outside of its network.
Your car's specs should outline which connectors and charging systems your EV can use (or it's something you'll learn on day one of ownership). It is possible that not every charging station you encounter will have fast charging options, but you should be able to connect to any Level 2 charger with or without a J1772 adapter.
Maintain Your Vehicle
EVs don't require regular oil changes like gas-powered cars. But that doesn't mean you can simply charge and go. You still have to attend to other standard-issue car maintenance tasks and regularly inflate and rotate your tires, change your wiper blades, and keep an eye on brake pads. Some EV drivers report that underinflated tires can significantly affect your car's range. Basically, maintenance matters.
But most EVs come with much less frequent maintenance checks than conventional cars (case in point: the Chevy Bolt has no scheduled maintenance outside of tire rotations every 7,500 miles, air filter changes every 22,500 miles, and coolant flushes every 150,000 miles). There may be some minimal maintenance required on batteries and electronics, and of course, things can unexpectedly go haywire.
By contrast, PHEVs will be on similar schedules to conventional cars because they still have gas engines and associated fluids.
Depending on your specific service needs, your neighborhood mechanic may not be equipped for the job (if specialty tools are required, for example). In that case, you may need to seek out a dealer who works on your EV model.
Prepare for Extreme Temperatures
EVs have some quirks in cold weather. All cars are slightly less efficient in the winter, but EVs lose some of their range (25 percent or more) because batteries are very sensitive to temperature. Plus, it takes energy to power climate control — whether you're running the heat or the air conditioning.
One way around this is to precondition your EV while it's plugged into your charger — this warms the car and the battery so stored energy goes toward powering your actual drive. It's similar to turning on your gas-powered car's heat before you actually need to get in and drive away, but with most EVs, you can turn on or schedule this function with a connected app. Heating both your battery and your EV's cabin ahead of time means you'll be warmer and your car will be more efficient despite the cold weather. You can also set preconditioning to work in the summer so your car is nice and cool for your commute.
With a PHEV, heat relies on the gas engine. If you want to stay on battery power, turn on your heated seats until you can't handle the cold and need to blast the heat.
Don’t Forget to Turn Your Car Off
EVs and PHEVs are generally a lot quieter than regular vehicles — which means it's easy to get out, shut the door, and forget that the car is running. Remember to turn it off before you walk away. While it's unlikely you'll come close to draining your battery before you return, you probably shouldn't get in the habit of leaving it on. You may have the option to enable an alarm that goes off when you've left your car running. Some EVs automatically shut off after a set amount of time — and Teslas turn off when you exit and close the door behind you.
Emily is a freelance writer based in Salt Lake City, UT.
This story originally appeared in Lifehacker. It is republished here as part of EcoWatch's partnership with Covering Climate Now, a global collaboration of more than 250 news outlets to strengthen coverage of the climate story.
EcoWatch Daily Newsletter
By Tom Duszynski
The coronavirus is certainly scary, but despite the constant reporting on total cases and a climbing death toll, the reality is that the vast majority of people who come down with COVID-19 survive it. Just as the number of cases grows, so does another number: those who have recovered.
In mid-March, the number of patients in the U.S. who had officially recovered from the virus was close to zero. That number is now in the tens of thousands and is climbing every day. But recovering from COVID-19 is more complicated than simply feeling better. Recovery involves biology, epidemiology and a little bit of bureaucracy too.
How does your body fight off COVID-19?<p>Once a person is exposed the coronavirus, the body starts producing <a href="https://www.mblintl.com/products/what-are-antibodies-mbli/" target="_blank">proteins called antibodies to fight the infection</a>. As these <a href="https://www.statnews.com/2020/03/27/serological-tests-reveal-immune-coronavirus/" target="_blank">antibodies start to successfully contain the virus</a> and keep it from replicating in the body, symptoms usually begin to lessen and you start to feel better. Eventually, if all goes well, your immune system will completely destroy all of the virus in your system. A person who was infected with and survived a virus with no long-term health effects or disabilities has "recovered."</p><p>On average, a person who is infected with SARS-CoV-2 will feel ill for about seven days from the onset of symptoms. Even after symptoms disappear, there still may be small amounts of the virus in a patient's system, and they should stay <a href="https://www.cdc.gov/coronavirus/2019-ncov/if-you-are-sick/steps-when-sick.html" target="_blank">isolated for an additional three days</a> to ensure they have truly <a href="https://health.usnews.com/conditions/articles/coronavirus-recovery-what-to-know" target="_blank">recovered and are no longer infectious</a>.</p>
What about immunity?<p>In general, once you have recovered from a viral infection, your body will keep cells called lymphocytes in your system. These cells "remember" viruses they've previously seen and can react quickly to fight them off again. If you are exposed to a virus you have already had, your antibodies will likely stop the virus before it starts causing symptoms. <a href="https://dx.doi.org/10.5114%2Fceji.2018.77390" target="_blank">You become immune</a>. This is the <a href="https://www.ncbi.nlm.nih.gov/books/NBK27158/" target="_blank">principle behind many vaccines</a>.</p><p>Unfortunately, immunity isn't perfect. For many viruses, like mumps, immunity can wane over time, leaving you <a href="https://www.sciencedaily.com/releases/2016/04/160421145747.htm" target="_blank">susceptible to the virus in the future</a>. This is why you need to get revaccinated – those "booster shots" – occasionally: to prompt your immune system to make more antibodies and memory cells.</p><p>Since this coronavirus is so new, scientists still don't know whether people who recover from COVID-19 are <a href="https://www.cdc.gov/coronavirus/2019-ncov/hcp/faq.html" target="_blank">immune to future infections of the virus</a>. Doctors are finding antibodies in ill and recovered patients, and <a href="https://www.cdc.gov/coronavirus/2019-ncov/hcp/clinical-guidance-management-patients.html" target="_blank">that indicates the development of immunity</a>. But the question remains how long that immunity will last. Other coronaviruses like <a href="https://doi.org/10.1002/jmv.25685" target="_blank">SARS and MERS produce an immune response</a> that will protect a person at least for a short time. I would suspect the same is true of SARS-CoV-2, but the research simply hasn't been done yet to say so definitively.</p>
Why have so few people officially recovered in the US?<p>This is a dangerous virus, so the Centers for Disease Control and Prevention is being extremely careful when deciding what it means to recover from COVID-19. Both medical and testing criteria must be met before a person is <a href="https://www.cdc.gov/coronavirus/2019-ncov/hcp/disposition-in-home-patients.html" target="_blank">officially declared recovered</a>.</p><p>Medically, a person must be fever-free without fever-reducing medications for three consecutive days. They must show an improvement in their other symptoms, including reduced coughing and shortness of breath. And it must be at least seven full days <a href="https://health.usnews.com/conditions/articles/coronavirus-recovery-what-to-know" target="_blank">since the symptoms began</a>.</p><p>In addition to those requirements, the CDC guidelines say that a person must test negative for the coronavirus twice, with the <a href="https://www.cdc.gov/coronavirus/2019-ncov/if-you-are-sick/care-for-someone.html" target="_blank">tests taken at least 24 hours apart</a>.</p><p>Only then, if both the symptom and testing conditions are met, is a person officially considered recovered by the CDC.</p><p>This second testing requirement is likely why there were so few official recovered cases in the U.S. until late March. Initially, there was a <a href="https://www.nytimes.com/2020/03/18/health/coronavirus-test-shortages-face-masks-swabs.html" target="_blank">massive shortage of testing in the U.S.</a> So while many people were certainly recovering over the last few weeks, this could not be officially confirmed. As the country enters the height of the pandemic in the coming weeks, focus is still on <a href="https://www.cdc.gov/coronavirus/2019-nCoV/hcp/clinical-criteria.html" target="_blank">testing those who are infected</a>, not those who have likely recovered.</p><p>Many more people are being tested now that states and private companies have begun <a href="https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/testing-in-us.html" target="_blank">producing and distributing tests</a>. As <a href="https://www.dispatch.com/news/20200406/coronavirus-in-ohio-from-its-rocky-start-testing-for-covid-19-slowly-ramping-up" target="_blank">the number of available tests increases</a> and the pandemic eventually slows in the country, more testing will be available for those who have appeared to recover. As people who have already recovered are tested, the appearance of any new infections will help researchers learn <a href="https://www.statnews.com/2020/03/24/we-need-smart-coronavirus-testing-not-just-more-testing/" target="_blank">how long immunity can be expected to last</a>.</p>
Once a person has recovered, what can they do?<p>Knowing whether or not people are immune to COVID-19 after they recover is going to determine what individuals, communities and society at large can do going forward. If scientists can show that recovered patients are immune to the coronavirus, then a person who has recovered could in theory <a href="https://www.vox.com/2020/3/30/21186822/immunity-to-covid-19-test-coronavirus-rt-pcr-antibody" target="_blank">help support the health care system</a> by caring for those who are infected.</p><p>Once communities pass the peak of the epidemic, the number of new infections will decline, while the number of <a href="https://www.newsweek.com/china-says-passed-peak-coronavirus-epidemic-covid-19-1491863" target="_blank">recovered people will increase</a>. As these trends continue, the risk of transmission will fall. Once the risk of transmission has fallen enough, community-level isolation and social distancing orders will begin to relax and businesses will start to reopen. Based on what other countries have gone through, it will be <a href="https://www.nature.com/articles/d41586-020-00154-w" target="_blank">months until the risk of transmission is low</a> in the U.S.</p><p>But before any of this can happen, the U.S. and the world need to make it through the peak of this pandemic. Social distancing works to slow the spread of infectious diseases and <a href="https://www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/what-you-can-do.html" target="_blank">is working for COVID-19</a>. Many people will <a href="https://www.yalemedicine.org/stories/2019-novel-coronavirus/" target="_blank">need medical help to recover</a>, and social distancing will slow this virus down and give people the best chance to do so.</p>
By Elizabeth Claire Alberts
The future for the world's oceans often looks grim. Fisheries are set to collapse by 2048, according to one study, and 8 million tons of plastic pollute the ocean every year, causing considerable damage to delicate marine ecosystems. Yet a new study in Nature offers an alternative, and more optimistic view on the ocean's future: it asserts that the entire marine environment could be substantially rebuilt by 2050, if humanity is able to step up to the challenge.
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By Zulfikar Abbany
Bread has been a source of basic nutrition for centuries, the holy trinity being wheat, maize and rice. It has also been the reason for a lot of innovation in science and technology, from millstones to microbiological investigations into a family of single-cell fungi called Saccharomyces.
Chemical leavening<p>If you like a little heft in your loaf, you will need a leavening agent.</p><p>For those short on time, you can use baking soda. That's a chemical compound of sodium bicarbonate mixed with potassium bitartrate, or cream of tartar.</p><p>Soda breads have their traditions in parts of eastern and central Europe, and in Ireland and Scotland, with Melrose loaves and "farls."</p><p>They can taste a bit bland, though, and are often considered only as an emergency solution on Sundays. No disrespect intended: They taste just fine fresh from the oven.</p><p>Whether it's chemical or more "natural," leavening relies largely on the production of carbon dioxide.</p><p>When you mix an acid, such as vinegar, buttermilk, yogurt or apple cider, with an alkaline compound like baking soda, you get CO2. That CO2 creates bubbles, which in turn capture steam in the oven and allow a bread to rise.</p><p><span></span>But it's better with yeast. Tastes better, too. It just takes more time. </p>
What is yeast?<p>There are yeasts all around us — on grains, in the air, in biofuels. It even lives inside us, but that's not always a good thing.</p><p><a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1090575/pdf/1471-2334-5-22.pdf" target="_blank">Candida yeast</a> can cause infections of the skin, feet, mouth, penis or vagina if it builds up too much in the body.</p><p>One of the most common yeasts, however, is <em>Saccharomyces cerevisiae</em>. That's <a href="https://www.dw.com/en/an-early-beer-archaeologists-tap-ground-at-worlds-oldest-brewery/a-45480731" target="_blank">"brewer's"</a> or "baker's" yeast.</p><p>You can get fresh baker's yeast, often in 42-gram (1.48-ounce) cubes, or as dried yeast (quick action or active, which requires rehydration) in a sachet of 7 grams.</p><p>There's little difference: One is compressed and the other is dehydrated and granulated. But they do the same thing, essentially. </p><p>Some commercial yeast producers add molasses and other nutrients. But natural yeast has plenty of useful nutrients in it anyway, including B group vitamins, so who knows whether it's good or necessary to add them. </p>
How does yeast work?<p>When you mix flour, yeast and water, you set off a veritable chain reaction. Enzymes in the wheat convert starch into sugar. And the yeast creates enzymes of its own to convert those sugars into a form it can absorb.</p><p>The yeast "feeds" on the sugars to create carbon dioxide and alcohol. The yeast burps and farts, releasing gases into the mix, and that creates bubbles to trap CO2. </p><p>It's a vital fermentation process that breaks down the gluten in the flour and helps make your bread more digestible.</p><p>The yeast cells split and reproduce, generating lactic and carbonic acid, raising the temperature and ultimately adding flavor to the mix.</p><p>The longer you leave the yeast to do its thing, the better for your bread. Time is more important than the amount of yeast. </p><p>In fact, that's an enduring question — how much yeast? I'll use 20 grams fresh yeast for 500 grams of flour. Others say that's enough yeast for 1 kilo. If you are converting a dry-yeast recipe to fresh yeast, some bakers advise tripling the weight. So, if a sachet of dried yeast is 7 grams, your fresh yeast is 21 grams.</p><p><span></span>But that also depends on the flours you are using, temperatures in the bowl and the room, and a host of other things. You'll just have to experiment and see. No number of books (and I've read a stack on bread) will help as much as trial and error.</p>
Wild yeast: Sourdough<p>So, good bread needs time. If you have a lot of time, why not move it up a notch and grow wild yeast — a sourdough starter — in your own home?</p><p>A sourdough starter is not to be mistaken (as it often is) for the leaven, or "mother," "sponge," or <em>levain</em>. That's more a second stage, a descendant of the starter. You take a scoop from your starter and add it to another flour and water mixture when you prepare the dough for a new loaf. </p><p>The sourdough process utilizes yeasts naturally present in flour and … yet more time. A longer fermentation process allows a richer lactic acid bacteria <em>lactobacilli</em> or LAB to evolve, and that can be healthy for your gut microbiome.</p><p>It's simple enough to start a sourdough starter. All you need is flour, warm water and time.</p><p>Some suggest equal measures of whole-grain flour and water at 28 degrees Celsius (82 degrees Fahrenheit), some say room temperature — just don't let the water exceed 40 C or the yeasts will die. Some suggest two parts flour to three parts water. But it's up to you whether you want a drier or wetter starter. You will know only through experimentation. </p><p>Some say you should filter tap water to remove chemicals like fluoride and avoid using water that's boiled and then cooled. Others say that really doesn't matter.</p><p>The main thing is, keep it clean and give it time. Days, weeks, months and years.</p>
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