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Captain David Matschke is well aware of the dangers he faces on the job. A firefighter for 32 years, he is trained to race to the scene of house fires, car crashes and even industrial accidents, breaking through windows and doors to evacuate occupants and routinely putting himself in harm’s way. But beyond fire itself, a study published today in the journal Environmental Science & Technology sheds new light on another, more insidious threat that may be putting firefighters’ health at risk: toxic chemicals in smoke.

New maps of Greenland’s coastal seafloor and bedrock beneath its massive ice sheet show that two to four times as many coastal glaciers are at risk of accelerated melting as had previously been thought.

Researchers at the University of California, Irvine, NASA and 30 other institutions have published the most comprehensive, accurate and high-resolution relief maps ever made of Greenland’s bedrock and coastal seafloor. Among the many data sources incorporated into the new maps is data from NASA’s Ocean Melting Greenland campaign.

The planet is home to a vast number of microscopic living organisms - plants, animals, and bacteria- found from deep sea volcanoes to the highest mountain peaks. These organisms too small to be seen by the naked eye affect both human health and the health of the world’s ecosystems. Despite their centrality to life on Earth, scientists have a limited understanding of their fundamental structure.

Scientists have discovered that a 'rare' type of marine bacteria is much more widespread than previously thought - and possesses a remarkable metabolism that could contribute to greenhouse gas production.

Much of Professor Emeritus Richard Wurtman’s career in MIT’s Department of Brain and Cognitive Sciences revolved around developing new treatments for diseases and conditions by modifying chemicals produced in the brain.