Science

NASA to Launch Its First Carbon-Testing Satellite to Measure Greenhouse Gas

By Admin, PBS News Hour

NASA plans to launch a satellite Tuesday that will measure concentrations of carbon dioxide (CO2) in the Earth's atmosphere, providing scientists with the most complete and precise set of measurements yet of the greenhouse gas.

Dance Dance, Science Revolution

Most of us aren't asked to dance our life's work, and that's probably a good thing. But John Bohannon, a visiting scholar at Harvard University and writer for Science Magazine, believes dance is the ultimate translation challenge for scientists.

With Green Energy’s Limitations, Scientists Hunt for Alternatives

As the Obama administration highlights the importance of finding and investing in renewable energy, states such as California are trying to determine whether wind, solar and other renewables can replace a significant amount of fossil fuel. Spencer Michels reports.

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Microbicide Gels May Help Prevent HIV/AIDS Transmission

By Admin, PBS News Hour

Two new studies of topical gels meant to prevent the transmission of HIV are providing fresh hope for the field of HIV prevention research after a string of disappointing set-backs.

Darwin’s 200th Birthday Celebrations Span the Globe

People worldwide celebrated Charles Darwin, the "father of evolution's" 200th birthday this week, honoring his extraordinary impact on science and history. Analysts discuss the man, his legacy and the ongoing debates raging over his core theories.

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Love Is a Chemical Reaction, Scientists Find

By PBS News Hour

To poets, love might be a many-splendored thing. But in neuroscientist Larry Young's lab, love is biochemistry.

More Satellite Collisions Could Occur, Experts Say

By PBS News Hour

As space officials continued to track the debris fields created by Tuesday's collision of two satellites, experts warned that more crashes will inevitably occur in the increasingly crowded orbits above Earth.

Amazon Unveils the Kindle 2

On Monday, Amazon introduced the latest version of its electronic book reader, the Kindle 2, which is thinner and lighter than the original, has an added joystick, more battery life and a function that reads books aloud.

Iran Launches First ‘Homegrown’ Satellite Into Space

By PBS News Hour

Iran said Tuesday that it had launched its first domestically-produced satellite as part of Tehran's ongoing efforts to build a space program. The launch was timed to coincide with observances of the 30th anniversary of the 1979 Iranian revolution.

NOVA Explores the Role of Technology in Espionage

An excerpt of Tuesday's NOVA program sheds light on the role of technology in espionage, focusing on the National Security Agency's surveillance of Osama bin Laden.

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