The Climate Crisis Is the First Truly Global Climate Shift in the Past 2,000 Years, Studies Confirm
The current climate crisis is unique in the last 2,000 years of history, a trio of papers has found, in that it is the only truly global climate shift during the last two millennia.
Previous anomalies like the Little Ice Age, when it was possible to skate on the Thames, were more regional in scope, while the warming trend at the end of the 20th century affected more than 98 percent of the planet, Reuters reported.
In contrast to pre-industrial #climate fluctuations, current, anthropogenic climate change is occurring across the whole world at the same time & is warming the planet faster than in the last 2,000 years: https://t.co/wYmpvpyg1c @CentreOeschger @nature @NatureGeosci @NatureNews pic.twitter.com/5if3Lq7Bi5— Universität Bern (@unibern) July 24, 2019
"The main takeaway is that climate variability in the contemporary period is very different than what's happened in the past 2,000 years," Columbia University climate scientist Nathan Steiger, who co-authored one of the papers published in Nature Wednesday, told Reuters. "This is definitely further evidence that fossil fuels and anthropogenic activity actually has fundamentally changed the climate," he added.
Some climate deniers have pointed to past climate shifts to argue that there is nothing new or human-caused about the current warming period. The Medieval Climate Anomaly warmed temperatures from 800 to 1200 AD and the Little Ice Age saw temperatures fall from the 1300s to the 1850s, but the new research shows that these and other events were much more localized than current climate change. None of them covered more than half the globe at any one time, according to The Guardian.
Based on 6 different probabilistic reconstruction methods using the PAGES2k proxy database, we show that Common Era climate epochs were not globally coherent phenomena. Warmth and cold happened in different places at different times.— Nathan Steiger (@njsteiger) July 24, 2019
In the past, researchers had taken evidence for these warming and cooling periods in Europe and North America and assumed they applied to the rest of the globe, the University of Bern explained in a press release. But for this week's papers, researchers consulted the PAGES (Past Global Changes) database of worldwide climate data from tree rings, ice cores, lake sediments and corals.
"It's true that during the Little Ice Age it was generally colder across the whole world," research team leader Raphael Neukom of the Oeschger Center for Climate Change Research at the University of Bern said, "but not everywhere at the same time. The peak periods of pre-industrial warm and cold periods occurred at different times in different places."
For example, the Little Ice Age was coldest in the Pacific in the 15th century, Europe in the 17th century and elsewhere in the 19th century, The Guardian reported.
"This paper should finally stop climate change deniers claiming that the recent observed coherent global warming is part of a natural climate cycle. This paper shows the truly stark difference between regional and localised changes in climate of the past and the truly global effect of anthropogenic greenhouse emissions," University College London climatology professor Mark Maslin told The Guardian.
The Nature paper was accompanied by a second, published in Nature Geoscience, that focused on the impacts of five large volcanic eruptions during the early 19th century that caused cooler temperatures, drought in Africa and the advance of glaciers in the Alps, the University of Bern further explained.
5 large volcanic eruptions in the early 19th century led to dry monsoon regions and growing glaciers in the Alps, according to a study led by the @CentreOeschger of the #unibern. https://t.co/0eBV0TdW7z #climate @NatureGeosci pic.twitter.com/oWAXo0fKcq— Universität Bern (@unibern) July 24, 2019
Because these eruptions occurred at the start of the industrial revolution, researchers say it is difficult to determine how volcanism interacted with the increasing burning of greenhouse gasses to impact climate at that time.
"It does sort of mask the effect of industrial processes, where they are starting to omit more CO2, because they counteract each other," Steiger told Smithsonian.com. "So volcanoes could cool, and humans would warm by the release of greenhouse gasses. It's tricky to parse out what's what."
This matters because international targets like the Paris agreement seek to limit warming to certain amounts above a pre-industrial norm.
"Given the large climatic changes seen in the early 19th century, it is difficult to define a pre-industrial climate, a notion to which all our climate targets refer," lead author and University of Bern climatologist Stefan Brönnimann said in the university release.
But what is clear is that today's warming is unprecedented during the study period. A final paper, also published in Nature Geoscience, concluded that the rates of warming documented in the second half of the 20th century were the fastest in 2,000 years.
That finding "highlights the extraordinary character of current climate change," Neukom told Smithsonian.com.
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By Arkilaus Kladit
My name is Arkilaus Kladit. I'm from the Knasaimos-Tehit tribe in South Sorong Regency, West Papua Province, Indonesia. For decades my tribe has been fighting to protect our forests from outsiders who want to log it or clear it for palm oil. For my people, the forest is our mother and our best friend. Everything we need to survive comes from the forest: food, medicines, building materials, and there are many sacred sites in the forest.
Map of the Knasaimos traditional lands.
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By Farah Aqel
Overthinkers are people who are buried in their own obsessive thoughts. Imagine being in a large maze where each turn leads into an even deeper and knottier tangle of catastrophic, distressing events — that is what it feels like to them when they think about the issues that confront them.
Ruminating<p>According to the late Susan Nolen-Hoeksema, a professor of psychology at Yale University, <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5796420/" target="_blank">ruminating</a> involves replaying a problem over and over in your mind. We ruminate by obsessing over our thoughts and thinking repetitively about various aspects of a past situation.</p><p>It usually involves regret, self-loathing and self-blaming. Rumination is associated with the development of depression, anxiety and eating disorders. </p><p>People prone to such patterns of thought may, for example, overanalyze every single detail of a relationship that breaks up. They often blame themselves for what has happened and are overcome with regret, with typical thoughts being: </p><p>- I should have been more patient and more supportive. </p><p>- I have lost the most perfect partner ever. </p><p>- No one will love me again.</p>
Worrying<p>Worrying is wanting to predict the future. It involves negative thoughts about things that might and might not happen.</p><p>- They'll not like me in the interview; they'll not give me the job. </p><p>- I haven't heard back from other employers. How long will I be unemployed?</p><p>These thoughts are energy-draining and distressing. They could happen to anyone under stress. But when you reach the point where your thoughts and worrying are preventing you from doing what you want to do — from living your life to the fullest — then you should take action.</p>
Catch Yourself Overthinking<p>Reuben Berger, a psychotherapist at the university hospital in the western German city of Bonn, recommends several practical steps that you could employ in your daily routine when you catch yourself worrying or ruminating.</p><p>One effective remedy, says Berger, is the <a href="https://www.uofmhealth.org/health-library/uf9938" target="_blank">thought-stopping technique.</a></p><p>"When the negative thoughts come or ruminations start, you say to yourself: 'Stop!,'" he says, adding that it is more effective when you actually say the word out loud.</p><p>He even recommends having a rubber band around your wrist to ping against yourself while saying the word. Adding a visual component by imagining a stop sign also makes the technique more powerful, he says.</p><p>The main idea here is conditioning yourself to stop the loop of worrying (making future predictions) or rumination (obsessing over past events).</p><p>Berger says the technique could take up to two weeks to take effect and that it needs to be practiced every day. "Consistency is very important," he says. </p>
Thoughts Are Just Thoughts<p>Another way of dealing with negative thoughts often used in modern therapy is realizing that thoughts aren't facts, says Berger.</p><p>He says it is important when we think something to ask: Is that real? Did that really happen? What is the worst thing that could happen?</p><p>Flight anxiety is one example where untrue thoughts are accepted as facts. Although air travel is the safest way to get around, people suffering from fear of flying accept their thoughts and fears as reality, then act upon them by refusing to fly.</p>
Mindfulness<p>Berger also recommends the use of mindfulness techniques, in which attention is paid to experiences in the moment without judging them, as a way of reducing worrying.</p><p>"Mindfulness helps you to distance yourself from your thoughts and to be more present in the moment," he says.</p><p><a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3432145/#R2" target="_blank">Several studies</a> have shown that mindfulness has a positive impact on reducing stress-related behaviors such as rumination and worrying, as focusing on the moment makes anxiety about other problems impossible.</p><p>Mindfulness can be practiced during routine activities by paying attention to your body and your surroundings. For instance, when you leave for work in the morning, you can focus on sensing the breeze, listen attentively to birds, feel the gravel under your feet and monitor your breath. </p>
Trick Your Brain Into Happiness<p>People plagued by obsessive thoughts do not always choose healthy ways like mindfulness to distract from them, however.</p><p> Dr. Edward Selby, a psychologist at Florida state university, has shown in a study that people try to avoid rumination by engaging in a range of uncontrolled behaviors, such as binge eating and substance abuse.</p><p>But he says that a much better way to overcome such distress is by distraction and shifting attention away from problems that are obsessing us.</p><p>There are many activities that can be used to distract from rumination, he says, and people should choose the one that works best for them. Here are some examples:</p><p>- Listen to music</p><p>- Read a book</p><p>- Take a hot shower</p><p>- Dance or exercise </p><p>- Talk to a friend (not about the problem)</p><p>- Watch a movie</p><p>- Mindfulness meditation</p>
Changing the Perception of Events<p>The way people perceive a situation largely influences their emotions and behavior. It is not the situation itself that determines how they feel, but rather the way they interpret it.</p><p>Reframing negative thoughts can lead to positive emotions and, subsequently, healthier behaviors — including a reduction in damaging overthinking and worrying.</p><p>Cognitive behavioral therapy (CBT) is currently a gold standard in psychotherapy. CBT aims to change the way people think and act. It largely involves challenging unhelpful beliefs or attitudes such as overgeneralization — thinking "I always fail at public speaking" when you have had one bad experience in front of an audience, for example — or "catastrophization," i.e., imagining the worst possible outcome to a situation. </p><p>A psychotherapist can teach people how to implement such thought-changing techniques into their lives. Techniques vary depending on their issues and goals.</p>
Solutions Are at Hand<p>Try to find ways of avoiding worrying, rumination and overthinking that make you feel most comfortable.</p><p>Incorporating any routine in your life when you're stressed isn't an easy task, but you can do it! If you feel overwhelmed, you can always seek professional help. </p><p><em>If you are suffering from serious emotional strain or suicidal thoughts, do not hesitate to seek professional help. You can find information on where to find such help, no matter where you live in the world, <a href="https://www.befrienders.org/" target="_blank">at this website.</a></em></p>
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A 4,000-year-old ice shelf in the Canadian Arctic has collapsed into the sea, leaving Canada without any fully intact ice shelves, Reuters reported. The Milne Ice Shelf lost more than 40 percent of its area in just two days at the end of July, said researchers who monitored its collapse.
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The coronavirus cases surging around the U.S. are often carried by kids, raising fears that the reopening of schools will be delayed and calling into question the wisdom of school districts that have reopened already.
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By Michael Baker, Amanda Kvalsvig and Nick Wilson
On Sunday, New Zealand marked 100 days without community transmission of COVID-19.
Deaths From COVID-19 Per Million Population<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzU0ODIyOS9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTY0MjkzMDc1OX0.7Yp1h1hokihlMJUurDukGmq-Y8NJB0V-07O1ukEjGt0/img.png?width=980" id="0fe6a" class="rm-shortcode" data-rm-shortcode-id="6bce85a610aee18e2f4f1c1caca7b8a0" data-rm-shortcode-name="rebelmouse-image" />
<div id="77fff" class="rm-shortcode" data-rm-shortcode-id="ce7b34f8986d3d36bee5d4d83ac0822c"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1292270210238447616" data-partner="rebelmouse"><div style="margin:1em 0">COVID-19 Update There are no new cases of COVID-19 to report in New Zealand today. It has been 100 days since t… https://t.co/Cz55ixGZUz</div> — Unite against COVID-19 (@Unite against COVID-19)<a href="https://twitter.com/covid19nz/statuses/1292270210238447616">1596936201.0</a></blockquote></div>
Getting Through the Pandemic<p>We have gained a much better understanding of COVID-19 over the past eight months. Without effective control measures, it is likely to continue to spread globally for many months to years, ultimately infecting billions and killing millions. The proportion of infected people who die appears to be <a href="https://www.medrxiv.org/content/10.1101/2020.05.03.20089854v4" target="_blank">slightly below 1%</a>.</p><p>This infection also causes serious <a href="https://www.bmj.com/content/370/bmj.m2815" target="_blank">long-term consequences</a> for some survivors. The largest uncertainties involve <a href="https://www.nature.com/articles/d41586-020-02278-5" target="_blank">immunity to this virus</a>, whether it can develop from exposure to infection or vaccines, and if it is long-lasting. The potential for treatment with antivirals and other therapeutics is also still uncertain.</p><p>This knowledge reinforces the huge benefits of sustaining elimination. We know that if New Zealand were to experience widespread COVID-19 transmission, the <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3310086/" target="_blank">impact on Māori and Pasifika populations</a> could be catastrophic.</p><p>We have previously described critical measures to get us through this period, including the use of fabric face masks, improving contact tracing with suitable digital tools, applying a science-based approach to border management, and the need for a dedicated national public health agency.</p><p>Maintaining elimination depends on adopting a highly strategic approach to risk management. This approach involves choosing an optimal mix of interventions and using resources in the most efficient way to keep the risk of COVID-19 outbreaks at a consistently low level. Several measures can contribute to this goal over the next few months, while also allowing incremental increases in international travel:</p><ul><li>resurgence planning for a border-control failure and outbreaks of various sizes, with state-of-the-art contact tracing and an upgraded alert level system</li><li>ensuring all New Zealanders own a <a href="https://www.nzma.org.nz/journal-articles/mass-masking-an-alternative-to-a-second-lockdown-in-aotearoa" target="_blank">re-useable fabric face mask</a> with their <a href="https://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=12354409" target="_blank">use built into the alert level system</a></li><li>conducting exercises and simulations to test outbreak management procedures, possibly including "mass masking days" to engage the public in the response</li><li>carefully exploring processes to allow <a href="https://blogs.otago.ac.nz/pubhealthexpert/2020/06/16/preventing-outbreaks-of-covid-19-in-nz-associated-with-air-travel-from-australia-new-modelling-study-of-alternatives-to-quarantine/" target="_blank">quarantine-free travel</a> between jurisdictions free of COVID-19, notably various Pacific Islands, Tasmania and Taiwan (which may require digital tracking of arriving travellers for the first few weeks)</li><li>planning for carefully managed inbound travel by key long-term visitor groups such as tertiary students who would generally still need managed quarantine.</li></ul>
Building Back Better<p>New Zealand cannot change the reality of the global COVID-19 pandemic. But it can leverage possible benefits.</p><p>We should conduct an <a href="https://blogs.otago.ac.nz/pubhealthexpert/2020/06/11/five-key-reasons-why-nz-should-have-an-official-inquiry-into-the-response-to-the-covid-19-pandemic/" target="_blank">official inquiry into the COVID-19 response</a> so we learn everything we possibly can to improve our response capacity for future events.</p><p>We also need to establish a specialized national public health agency to <a href="https://blogs.otago.ac.nz/pubhealthexpert/2017/12/20/the-havelock-north-drinking-water-inquiry-a-wake-up-call-to-rebuild-public-health-in-new-zealand/" target="_blank">manage serious threats to public health</a> and provide critical mass to <a href="https://blogs.otago.ac.nz/pubhealthexpert/2020/02/05/a-preventable-measles-epidemic-lessons-for-reforming-public-health-in-nz/" target="_blank">advance public health generally</a>. Such an agency appears to have been a key factor in the success of Taiwan, which avoided a costly lockdown entirely.</p><p>Business as usual should not be an option for the recovery phase. A recent <a href="https://www.nzherald.co.nz/business/news/article.cfm?c_id=3&objectid=12353555" target="_blank">Massey University survey</a> suggests seven out of ten New Zealanders support a green recovery approach.</p><p>New Zealand's elimination of COVID-19 has drawn attention worldwide, with a description just <a href="https://www.nejm.org/doi/full/10.1056/NEJMc2025203" target="_blank">published</a> in the New England Journal of Medicine. We support a rejuvenated World Health Organization that can provide improved global leadership for pandemic prevention and control, including greater use of an elimination approach to combat COVID-19.</p>
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