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The top row of images show each study region in 2005, which had abundant NOx in urban areas where human emissions are high, leading to systems where ozone formation was controlled by VOC amounts. As pollution controls were put into place on NOx emissions, by 2015, the systems in Europe, the United States, and East Asian urban areas became limited by NOx, meaning that further controls on NOx would help reduce ozone formation. 
(NASA’s Earth Observatory /Josh Stevens)

NASA Finds New Way to Track Ozone By Satellite

Ozone pollution near Earth’s surface is one of the main ingredients of summertime smog. But it not directly measurable from space, due to the abundance of ozone higher in the atmosphere, which masks the surface. Now, researchers have devised a way to use satellite measurements of the precursor gases that contribute to ozone formation to predict when and where ozone will form.

by |November 6, 2017
Researchers at the 925-ton boulder called "the bull." (Elisa Casella)

Giant Boulders on Bahamas Coast Are Evidence of Ancient Storms and Sea Level, Says Study

A new study says that storms of intensities seen today, combined with a few meters increase in sea level, were enough to transport coastal boulders weighing hundreds of tons more than 100,000 year ago.

by |November 1, 2017
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By 2100, Climate Change Could Alter Key Microbial Interactions in the Ocean

The warmer, more acidic waters caused by climate change influence the behavior of tiny marine organisms essential to ocean health.

by |October 31, 2017
James Lea (left) and Francesco Muschitiello drill into the ground to sample the sedimentary deposits of an ancient glacial lake in Sweden. The layered deposits, called varves, document the ice sheet's response to changing atmospheric conditions. Credit: Francesco Muschitiello

Ice Sheets May Melt Rapidly in Response to Distant Volcanoes

A study of ancient eruptions shows modern ice sheets could be vulnerable.

by |October 24, 2017
fugro-synergy2

Expedition Explores Undersea Rift off Greece

The Corinth rift is one of the most seismically active areas in Europe. Starting this month, researchers will drill into the rift to discover its past and future.

by |October 19, 2017
soil sampling kit

High Levels of Lead Contaminate Many Backyards in Brooklyn Neighborhood

An ongoing study finds that 92 percent of private yards in Greenpoint may have unsafe levels of lead in their soil.

by |October 9, 2017
core repository at lamont-doherty

Ancient Humans Left Africa to Escape Drying Climate, Says Study

Ancient humans migrated out of Africa to escape a drying climate, says a new study—a finding that contradicts previous suggestions that ancient people were able to leave because a then-wet climate allowed them to cross the generally arid Horn of Africa and Middle East.

by |October 5, 2017
A researcher climbs a deposit left by massive volcanism in what is now Siberia 252 million years ago. The eruptions may have led to catastrophic environmental changes, says a new study. (Courtesy Linda Elkins-Tanton)

Study Bolsters Volcanic Theory of Ancient Extinction

A team of scientists has found new evidence to bolster the idea that the Permian Extinction, which occurred 252 million years ago, was caused by massive volcanic eruptions in what is now Siberia.

by |October 4, 2017
The sprayer, Caroline Obinju Ocholla, is 33 yrs old, married with 4 children - 5,8,10, and 12 years old. She currently volunteers as a CHV. She is doing this work to help the community but also to save money to help her family. She is motivated by the wages being paid for the work, the respect she recieves from the community (they trust her), her daughters and her spouse who is happy she is bringing in income and supports her. She also says community members prefer female sprayers. Some call her and specifically ask for her to spray their houses. In the future she hopes to be a hairdresser. 
Photo by Jessica Scranton/AIRS

Seasonal Changes in Climate May Muddle Results of Malaria Interventions in Africa

A new climate study shows that some countries in sub-Saharan Africa may be underestimating the impact of their malaria control activities, while others may be underestimating their success.

by |September 27, 2017
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How Will Climate Change Impact Ocean Health?

Three scientists explain what they’re learning about the ocean’s changing conditions. These discoveries will contribute to the sustainable management and conservation of marine resources, helping to secure food for current and future generations.

by |September 21, 2017