Feb 17 Watch 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. Continue watching
Feb 16 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. Continue reading
Feb 13 Watch 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. Continue watching
Feb 13 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. Continue reading
Feb 12 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. Continue reading
Feb 10 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. Continue reading
Feb 03 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. Continue reading
Feb 02 Watch 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. Continue watching
Feb 02 Watch Tenn. Coal Ash Disaster Raises Concerns about Similar Sites Nationwide In December, tons of spilled coal ash devastated the town of Kingston, Tenn. Tom Bearden reports on the disaster's effects on residents, cleanup efforts and the debate over safety standards for other coal ash storage sites around the country. Continue watching
Jan 30 As Wind Power Usage Grows, Wind Farms Expand By PBS News Hour On his 120-acre farm in Minnesota, Richard Peterson harvests crops of corn, soybeans and, since 2005, wind. His turbine is just one of 67, all housed on adjoining farmland, that make up a wind farm capable of generating 100 megawatts… Continue reading