Ecosystems

Can rain clean the atmosphere?
August 28, 2015 02:31 PM - MIT News

As a raindrop falls through the atmosphere, it can attract tens to hundreds of tiny aerosol particles to its surface before hitting the ground. The process by which droplets and aerosols attract is coagulation, a natural phenomenon that can act to clear the air of pollutants like soot, sulfates, and organic particles. Atmospheric chemists at MIT have now determined just how effective rain is in cleaning the atmosphere. 

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The Fingerprints of Sea Level Rise
August 26, 2015 02:49 PM - NASA Jet Propulsion Laboratory

When you fill a sink, the water rises at the same rate to the same height in every corner. That's not the way it works with our rising seas.

According to the 23-year record of satellite data from NASA and its partners, the sea level is rising a few millimeters a year -- a fraction of an inch. If you live on the U.S. East Coast, though, your sea level is rising two or three times faster than average. If you live in Scandinavia, it's falling. Residents of China's Yellow River delta are swamped by sea level rise of more than nine inches (25 centimeters) a year.

These regional differences in sea level change will become even more apparent in the future, as ice sheets melt. For instance, when the Amundsen Sea sector of the West Antarctic Ice Sheet is totally gone, the average global sea level will rise four feet. But the East Coast of the United States will see an additional 14 to 15 inches above that average.

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SPOTLIGHT

Turtle Hotspots Identified Around the World Contain Diverse Species and Richness

Chelonian Conservation and Biology

Global biodiversity is becoming more threatened as the human population continues to grow and use the world’s resources. Turtles have the misfortune of being on the leading edge of biodiversity decline and serve as an indicator of ecosystem degradation.

Researchers have identified 16 turtle “hotspots” around the world. These regions host the many native species of tortoises and freshwater turtles. By focusing on such areas, conservationists can target preservation efforts where the greatest effects can be achieved.

Scientists from the Chelonian Research Foundation, Conservation International, and State University of New York at Stony Brook recently published an article in the journal Chelonian Conservation and Biology that names three types of hotspots—biodiversity hotspots, high-biodiversity wilderness areas, and turtle priority areas. Taxon richness and endemism values are offered for the 16 identified hotspots, which host 262 species, or 83 percent of all turtle species.

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Endangered Animals of the World

August 27th, 2015
Let's raise awareness for some of these common (and not so common) endangered species!
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Waste water treatment strategy needed for Cyanobacteria Bloom in Lake Atitlan, Guatemala

August 24th, 2015
On 3 August 2015, a cyanobacteria bloom invaded Lake Atitlan in Guatemala. The question at hand is: What can we do about it?
To read the full post and comment, visit the ENN Community Blog

Which Indoor Plant is Right for your Home?

August 20th, 2015
They're more than just functional decoration - houseplants are living inhabitants that turn your house into a home. Read on to find out what plant is right for you!
To read the full post and comment, visit the ENN Community Blog

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