Looking at the Moon to Better See Earth 08-19-2017 NASA’s Terra satellite was built to observe Earth, and for more than 17 years its imagers have looked downward for 24 hours a day, collecting images needed to study the planet’s surface, oceans, and atmosphere. However, the satellite recently trained its eyes on a different celestial body. >>
	Can Poor Air Quality Mask Global Warming's Effects? 08-11-2017 During the 20th century, the average temperature of the continental United States rose by almost 1 degree Fahrenheit (0.5 degree Celsius) -- everywhere, that is, except in the Southeast. >>
	Is Climate Changing Cloud Heights? Too Soon to Say 05-05-2017 Clouds are both Earth's cooling sunshade and its insulating blanket. Currently their cooling effect prevails globally. But as Earth warms, the characteristics of clouds over different global regions -- their thickness, brightness and height -- are expected to change in ways that scientists don't fully understand. >>