In Appalachia, coal operators are removing the tops of mountains and burying hundreds of miles of streams with rock waste as they mine coal seams hundreds of feet below the mountain top.

Satellite sensor technology automates volcanic observation, providing timely information about the eruption of Nyamuragira Volcano.

NASA scientist James Hansen has tracked Earth's temperature for decades, and he is confident the global warming trend of 0.9 degrees Celsius observed since 1880 is mainly the result of human-produced greenhouse gases.

Studying human appropriation of net primary productivity helps predict the planet's ability to sustain the human population.

A Maryland beekeeper's annual records of honey production reveal that flowering trees are blooming nearly a month earlier than they did a few decades ago. Listen to the podcast by…

Global warming is shrinking the Greenland Ice Sheet by at least 150 billion metric tons a year.

As Earth's average temperature rises, and most rapidly in the high latitudes, what is happening to the great northern forests of Siberia? Join scientists from NASA and Russia's Academy of Science on an expedition down the Kochechum River in north-central Siberia as they go in search of answers.

From why global warming is a problem to whether increased solar activity could be behind it, this Q&A article includes responses to common questions about global warming.

Researchers are developing a landslide early-warning system that uses space-based measurements of rainfall combined with a global risk map based on terrain, landcover, and soils.

Satellite data detect previously unknown seasonal cycles in the leaf area of the Amazon Rainforest. Increasing leaf area during the sunny dry season may actually trigger the seasonal rains.

Global warming is happening now, and scientists are very confident that greenhouse gases are responsible. This article explains what global warming is, how scientists know it's happening, and how they predict future climate.

Satellites reveal a complex network of subglacial lakes in Antarctica.

Tropical forests are home to half the Earth's species, and their trees are an immense standing reservoir of carbon. Deforestation will have increasingly serious consequences for biodiversity, humans, and climate.

NASA satellites are playing a key role in an alert system that notifies the South African electric company when potential outage-causing fires come near the power lines.

Elevation data collected from the space shuttle help map Earth's rivers in remote regions.

Using satellite observations of sea ice and clouds, scientists discover that Earth’s poles are still effective reflectors for incoming sunlight.

A string of dry years shriveled vegetation in Africa's Sahel, causing some to fear that the Sahara Desert was shifting south. Satellite data spanning more than twenty years now shows that the Sahel is holding its own against the Sahara and may be recovering with the return of near-normal rainfall.