Using instruments old and new, scientists collected data as leaves emerged across a deciduous forest in Edgewater, Maryland.

NASA satellites and sensors constantly take the pulse of our planet, measuring how Earth changes by the day, season, year, and decade. Researchers and resource managers analyze those measurements and ...

In Earth’s history before the Industrial Revolution, Earth’s climate changed due to natural causes not related to human activity. Most often, global climate has changed because of variations in ...

On top of all the great science they make possible, satellites often produce imagery that is simply beautiful. This image of Turnabout Glacier on Canada’s Ellesmere Island is a case in point. It shows ...

On April 29, 1999, NASA Earth Observatory (EO) started delivering science stories and imagery to the public through the Internet. So much has changed in those 20 years… + In 1999, about 3 to 5 percent ...

On top of all the great science they make possible, satellites often produce imagery that is simply beautiful. This image of Turnabout Glacier on Canada’s Ellesmere Island is a case in point. It shows ...

Every month on Earth Matters, we offer a puzzling satellite image. The April 2024 puzzler is shown above. Your challenge is to use the comments section to tell us where it is, what we are looking at, ...

Every month on Earth Matters, we offer a puzzling satellite image. The April 2024 puzzler is shown above. Your challenge is to use the comments section to tell us where it is, what we are looking at, ...

All matter in the universe that has a temperature above absolute zero (the temperature at which all atomic or molecular motion stops) radiates energy across a range of wavelengths in the ...

The water, or hydrologic, cycle describes the pilgrimage of water as water molecules make their way from the Earth’s surface to the atmosphere and back again, in some cases to below the surface. This ...

The flowering dogwood (Cornus florida) is a deciduous tree, meaning that it loses its leaves in the winter. In early spring, the dogwood produces white or pink petals, and in late spring it has red ...

Desertification. The word invokes images of sand dunes blowing over abandoned farms as some irresistible, dark force steadily transforms fertile fields into inhospitable wasteland. The United Nations’ ...