Keeping watch on Earth and space
roundup At the fall meeting of the American Geophysical Union, scientists are delivering somber findings on global warming.
At the fall meeting of the American Geophysical Union, scientists deliver somber findings on global warming--and more upbeat views on the solar system. 
Video: Is the government censoring science?
Video: Former VP on American media consumption
December 14, 2006
December 14, 2006
Postcards from the edge of Victoria Crater
December 13, 2006
December 12, 2006
video See the latest flight report for the Mars Exploration Rover project, featuring video shot on the terrain of the Red Planet.
December 12, 2006
video The GRACE project estimates how the world's water depths have changed and will change over years to come.
December 12, 2006
December 11, 2006
December 11, 2006
video Marika Holland, scientist at the National Center for Atmospheric Research, presents projections about melting Arctic sea ice.
December 11, 2006
video Ecosystems under the sea and major industries above it are being affected by the rapid melting of Arctic ice.
December 11, 2006
video In this clip, a scientist explains how carbon dioxide heats the lower atmosphere, while the upper atmosphere is actually cooled down.
December 11, 2006
Gore urges scientists to warn public about global warming
Global warming is going on, says Al Gore, and scientists need to help spread the word. December 14, 2006
Pollution declining in parts of eastern U.S.
Controls imposed on coal-burning power plants are making it easier to breathe in Ohio River Valley, a new study says.December 14, 2006
Next goal for Mars rover: Victoria Crater
NASA scientists look for a way to get Mars rover into--and out of--a massive crater on the Red Planet.December 13, 2006
Satellites used to track world's water supply
The roving pair is measuring the Earth's gravitational field as part of a NASA-sponsored experiment on water supply changes.December 12, 2006
Rover in action on Mars
video See the latest flight report for the Mars Exploration Rover project, featuring video shot on the terrain of the Red Planet. December 12, 2006
Satellites that can measure by the micron
video The GRACE project estimates how the world's water depths have changed and will change over years to come.December 12, 2006
Risks of nuclear war greater, scientists say
Increased urbanization, greater proliferation of nuclear materials and political instability have increased the risks of nuclear war.December 11, 2006
Study: Most Arctic sea ice could disappear by 2040
A new study predicts that the erosion of the sea ice in the Arctic could begin to rapidly accelerate starting in 2025.December 11, 2006
Sea ice shrinking rapidly
video Marika Holland, scientist at the National Center for Atmospheric Research, presents projections about melting Arctic sea ice.
December 11, 2006
See how ecosystems are affected by global warming
video Ecosystems under the sea and major industries above it are being affected by the rapid melting of Arctic ice.December 11, 2006
What we don't know about the greenhouse effect
video In this clip, a scientist explains how carbon dioxide heats the lower atmosphere, while the upper atmosphere is actually cooled down.December 11, 2006