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Sci-Tech

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.

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

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

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

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