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The latest environmental news, from the most reliable sources, all in one place.
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Fri, 25 May 2018 17:25:38 GMT |
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It's the small things that matter – when insects shaped today's natural world |
Insects that play an essential role in moulding ecosystems may have begun their rise to prominence earlier than previously thought, shedding new light on how the world became modern. That is the finding of a new paper published by an international team of researchers led by Simon Fraser University's Bruce Archibald who is also a research associate at the Royal BC Museum. |
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New study examines the causes and consequences of the 2015 Wimberley floods |
A new study by Chad Furl, postdoctoral research associate, and Hatim Sharif, professor of civil and environmental engineering at The University of Texas at San Antonio, delves into the 2015 Wimberley, Texas floods that destroyed 350 homes and claimed 13 lives. Furl and Sharif researched the factors that led to the catastrophic flooding and shed light on new ways people in flood-prone areas can protect against future tragedies. |
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Plastic in the Oceans Increasing Risk of Disease in Coral Reefs
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More than 11 billion pieces of plastic are lodged within coral reefs in the Asia-Pacific region. According to a new study published in the journal Science, as this plastic gets tangled, it often cuts the coral, increasing the risk of infection and disease outbreaks by as much 89 percent. |
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Coast Report |
| If we gave our coastlines an environmental report card, what grade should they get? Surprise! There IS a report, and it gives our coasts about a grade "C."
It's called the National Coastal Condition Report, and it's the third in a series started by the Environmental Protection Agency in 2001.
It's the first truly national assessment of all our coastlines' ecological health, including the Great Lakes, Alaska and Hawaii.
Surprisingly, some areas scored better than before. The Northeast and the West have improved since the last report; while the Southeast and the Gulf of Mexico rank lower. Overall, our coastlines earned a down-the-middle "Fair," when it comes to water quality, sediment quality, habitat, contaminants in fish tissue and conditions for bottom-dwelling critters.
But while "Fair" might sound as stinging as a bad grade in math class, it actually holds promise. Comparisons with the 2005 report card show slight improvements due, possibly, to positive effects from environmental laws passed in the 1970s.
If you think our coasts could do better, you're right and you can help by cleaning litter off a beach and eating sustainably farmed seafood. Small changes, maybe. But they make the grade: Coast to coast.
Script by Gail Davis |
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Health Factors Threaten Gorillas - But Why? |
| What's a significant threat to the survival of captive gorillas? Surprisingly it's heart disease.
It's ironic. In the wild, gorillas inch closer to extinction daily from habitat loss and poaching. Because of this troubling outlook for wild gorillas, zookeepers especially want to maintain captive gorillas in good health.
Yet male gorillas in zoos and preserves have significant rates of chronic heart disease. So high that veterinarian Pam Dennis of the Cleveland Metroparks Zoo describes heart disease as "a major threat to gorilla health."
Are genetics a factor? Or diet, or exercise, or a virus? To find answers, researchers have formed the Gorilla Health Project, a collaboration of zoos across North America. They are pooling information to form a database about gorilla heart disease and other conditions affecting captive gorillas.
At the Cleveland zoo, recent heart exams of two males in their twenties revealed signs of minor heart disease in one and advanced heart disease in the other.
Just like humans, they're now taking beta blockers and/or ACE inhibitors, to hopefully stem their disease progression. And now thanks to the database, how they fare may help other gorillas.
Script by Bob Rhein |
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Coal Gasification |
| It's no news flash that, over the years, one of the dirtiest sources of energy has been coal; in fact, it's among the top contributors to carbon dioxide in the atmosphere.
The challenge, according to the U.S. government's Energy Information Administration, is that coal accounts for about fifty percent of all the energy produced in the U.S.
Luckily, new technologies already in use are making coal a cleaner-burning fuel.
Coal gasification is based on a technology that's been around since the 1850s. Rather than burning coal directly, it's exposed to steam and oxygen under high temperatures and pressures. The chemical reaction produces gases.
So, how "green" is it? Well, the byproduct from coal gasification, hydrogen, is considered one of the cleanest burning fuels on earth. Yet, there is still the environmental impact of mining coal and transporting it. And, the process itself has a few glitches, like it still has carbon as part of the mix.
While scientists continue looking for ways to capture and get rid of carbon for good, like burying it underground, reducing your own energy needs will help. After all, one bright idea deserves another!
Script by Bob Rhein |
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Vulnerabilities to Global Warming |
The IPCC working group responsible for evaluating society's vulnerability to climate change has released its section of the Fifth Assessment Report. The first article in this series examines the working group's findings about food security. The second one reviews what the IPCC identified as urban vulnerabilities to climate change. Finally, a look at the 9 cities most at risk from flooding associated with climate change (and the most resilient, too). (Photo: DTL/morgueFile) Vulnerabilities to Global Warming originally appeared on About.com Environmental Issues on Wednesday, May 21st, 2014 at 14:40:41. Permalink | Comment | Email this |
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Landscapes, Slow Turtles, and Roads |
I suggested earlier than one of the top environmental issues is the way in which we use land. One resulting pattern is widespread landscape fragmentation. I explain what fragmentation is in a new article here. Another very visible element of modern landscapes is our sprawling road network. In two new articles you can read about road ecology, and about roadkill. (Photo: A road cuts through boreal forest. Credit: dyet/morgueFile.com) Landscapes, Slow Turtles, and Roads originally appeared on About.com Environmental Issues on Friday, May 16th, 2014 at 11:35:33. Permalink | Comment | Email this |
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Science: Participate! |
Nowadays, opportunities for amateurs to contribute to science abound. Learn more about citizen science.
(Photo: Black-throated Blue Warbler. USFWS) Science: Participate! originally appeared on About.com Environmental Issues on Thursday, May 15th, 2014 at 14:14:50. Permalink | Comment | Email this |
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Fri, 25 May 2018 17:25:41 GMT |
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