When Europeans first arrived in North America, Atlantic puffins were common on islands in the Gulf of Maine. But hunters killed many of the birds for food or for feathers to adorn ladies' hats. By the 1800s, the population in Maine had plummeted.
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A "major" natural gas explosion killed two people and seriously injured at least seven in Baltimore, Maryland Monday morning.
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EcoWatch Daily Newsletter
In the coming days, the U.S. Environmental Protection Agency (EPA) is expected to use its power to roll back yet another Obama-era environmental protection meant to curb air pollution and slow the climate crisis.
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By Alex Kirby
The temperature of the Arctic matters to the entire world: it helps to keep the global climate fairly cool. Scientists now say that by 2035 there could be an end to Arctic sea ice.
Melt Ponds Crucial<p>"The prospect of loss of sea ice by 2035 should really be focusing all our minds on achieving a low-carbon world as soon as humanly feasible."</p><p><a href="http://www.reading.ac.uk/search/search-staff-details.aspx?id=10813" target="_blank">Dr. David Schroeder from the University of Reading</a>, UK, who co-led the implementation of the melt pond scheme in the climate model, says, "This shows just how important sea ice processes like melt ponds are in the Arctic, and why it is crucial that they are incorporated into climate models."</p><p>The extent of the areas <a href="https://nsidc.org/cryosphere/seaice/characteristics/formation.html" target="_blank">sea ice</a> covers varies between summer and winter. If more solar energy is absorbed at the surface, and temperatures rise further, a cycle of warming and melting occurs during summer months.</p><p>When the ice forms, the ocean water beneath becomes saltier and denser than the surrounding ocean. Saltier water sinks and moves along the ocean bottom towards the equator, while warm water from mid-depths to the surface travels from the equator towards the poles.</p><p>Scientists refer to this process as the ocean's global "conveyor-belt." Changes to the volume of sea ice can disrupt normal ocean circulation, with consequences for global climate. </p>
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A powerful series of thunderstorms roared across the Midwest on Monday, downing trees, damaging structures and knocking out power to more than a million people.
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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By Shawna Foo
Anyone who's tending a garden right now knows what extreme heat can do to plants. Heat is also a concern for an important form of underwater gardening: growing corals and "outplanting," or transplanting them to restore damaged reefs.
Coral Gardening<p>Coral reefs <a href="https://www.noaa.gov/education/resource-collections/marine-life/coral-reef-ecosystems" target="_blank">support over 25% of marine life</a> by providing food, shelter and a place for fish and other organisms to reproduce and raise young. Today, <a href="https://www.climate.gov/news-features/understanding-climate/climate-change-ocean-heat-content" target="_blank">ocean warming driven by climate change</a> is stressing reefs worldwide.</p><p>Rising ocean temperatures cause <a href="https://oceanservice.noaa.gov/facts/coralreef-climate.html#:%7E:text=Climate%20change%20leads%20to%3A,to%20the%20smothering%20of%20coral." target="_blank">bleaching events</a> – episodes in which corals expel the algae that live inside them and provide the corals with most of their food, as well as their vibrant colors. When corals lose their algae, they become less resistant to stressors such as disease and eventually may die.</p><p>Hundreds of organizations worldwide are working to restore damaged coral reefs by growing thousands of small coral fragments in nurseries, which may be onshore in laboratories or in the ocean near degraded reefs. Then scuba divers physically plant them at restoration sites.</p>
Sea surface temperatures on Aug. 3, 2020, measured from satellites. Warning = possible bleaching; Alert Level 1 = significant bleaching likely; Alert Level 2 = severe bleaching and significant mortality likely. NOAA Coral Reef Watch
Warmer Oceans<p>Climate scientists project that the oceans will <a href="https://www.ipcc.ch/site/assets/uploads/2018/03/ar5_wgII_spm_en-1.pdf" target="_blank">warm up to 3˚C</a> by the year 2100. Scientists are working to create coral outplants that can <a href="https://doi.org/10.1073/pnas.1721415116" target="_blank">better survive increases in temperature</a>, which could help to <a href="https://doi.org/10.1002/eap.1978" target="_blank">increase restoration success</a> in the future.</p><p>When coral restoration experts choose where to outplant, they typically consider what's on the seafloor, algae that could smother coral, predators that eat coral and the <a href="https://doi.org/10.1002/fee.1792" target="_blank">presence of fish</a>. Our study shows that using temperature data and other information collected remotely from airplanes and satellites could help to <a href="https://doi.org/10.3389/fmars.2019.00079" target="_blank">optimize this process</a>. Remote sensing, which scientists have used to study coral reefs for almost 40 years, can provide information on much larger scales than water surveys.</p><p>Coral reefs face an uncertain future and may not recover naturally from human-caused climate change. Conserving them will require reducing greenhouse gas emissions, protecting key habitats and actively restoring reefs. I hope that our research on temperature will help increase coral outplant survival and restoration success.</p><p><em><a href="https://theconversation.com/profiles/shawna-foo-1136932" target="_blank">Shawna Foo</a> is a Postdoctoral Research Scholar at the Arizona State University. </em></p><p><em>Disclosure statement: Shawna Foo receives funding from the John D. and Catherine T. MacArthur Foundation.</em></p><p><em>Reposted with permission from <a href="https://theconversation.com/ocean-warming-threatens-coral-reefs-and-soon-could-make-it-harder-to-restore-them-142876" target="_blank" style="">The Conversation</a>.</em><em></em></p>
By David Korten
Our present course puts humans on track to be among the species that expire in Earth's ongoing sixth mass extinction. In my conversations with thoughtful people, I am finding increasing acceptance of this horrific premise.
Hurricane forecasters predict the 2020 hurricane season will be the second-most active in nearly four decades.
Three years ago, scientists predicted it would happen. Now, new NASA satellite imagery confirms it's true: two ice caps in Canada's Nunavut province have disappeared completely, providing more visual evidence of the rapid warming happening near the poles, as CTV News in Canada reported.
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The controversial Dakota Access Pipeline won a reprieve Wednesday when an appeals court canceled a lower court order mandating the pipeline be shut down and emptied of oil while a full environmental impact statement is completed.
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