Satellites Track Human Exposure to Fine Particle Pollution
May 31 — Researchers have compared the capabilities of aerosol measurements from two instruments on NASA's Terra satellite in predicting exposure to air pollution harmful to human health. More

NASA Mission Checks Health of Greenland's Ice Sheet and Glaciers
May 30 — A NASA-led research team has returned from Greenland after an annual three-week mission to check the health of its glaciers and ice sheet. More

Research Finds That Earth's Climate is Approaching 'Dangerous' Point
May 30 — Greenhouse gases have brought the Earth's climate close to critical tipping points, with potentially dangerous consequences for the planet, new research shows. More

NASA Embarks on Cutting-Edge Polar Exploration and Research
May 29 — NASA has selected 33 new scientific investigations to a fund that will advance interdisciplinary studies of Earth's polar regions and the objectives of the International Polar Year. More

NASA Researcher Finds Days of Snow Melting on the Rise in Greenland
May 29 — In 2006, Greenland experienced more days of melting snow and at higher altitudes than average over the past 18 years, according to a new NASA-funded project using satellite observations. More

NASA Satellites Bolster Research on Barren Mid-Ocean Regions
May 22 — NASA satellite data have helped scientists solve a decades-old puzzle about how vast blooms of microscopic plants can form in the middle of otherwise barren mid-ocean regions. More

NASA Finds Vast Regions of West Antarctica Melted in Recent Past
May 15 — A team of NASA and university scientists has found clear evidence that extensive areas of snow melted in west Antarctica in January 2005 in response to warm temperatures More

NASA's Close-Up Look at a Hurricane's Eye Reveals a New 'Fuel' Source
May 14 — New NASA research is providing clues about how the seemingly subtle movement of air within and around a hurricane's eye provides energy to keep this central "powerhouse" functioning. More

Space Station Provides New 'Window' for International Polar Year
May 11 — Crew members on the International Space Station are supporting International Polar Year efforts by taking new snapshots of Earth's polar regions -- the areas of the globe surrounding the North and South poles -- from the unique vantage point of space. More

NASA Study Suggests Extreme Summer Warming in the Future
May 9 — A new study by NASA scientists suggests that greenhouse-gas warming may raise average summer temperatures in the eastern United States nearly 10 degrees Fahrenheit by the 2080s. More

Widespread 'Twilight Zone' Detected Around Clouds
May 3 — An extensive and previously unseen "twilight zone" of particles that represents a gradual transition from cloud droplets to dry particles could complicate scientists' efforts to get a fix on how much the world will warm in the future. More

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