Jan 14 Watch President Bush Pledges to Return to the Moon President Bush announced plans Wednesday to develop a new spacecraft to send humans back to the moon as early as 2015 and use it as a launching point for manned missions to Mars and beyond. Two experts debate whether the… Continue watching
Jan 09 Farm-Raised Salmon Higher in Cancer-causing Pollutants, Study Shows A study published Thursday in the journal Science found that farm-raised salmon contain significantly more cancer-causing pollutants than those caught in the wild. Continue reading
Jan 05 Mars Rover Sends First Images to Earth The robotic explorer Spirit successfully landed on Mars Saturday night and immediately began transmitting images of its surroundings, a long-dried up lake bed where scientists are seeking evidence that life once existed on the red planet. Continue reading
Dec 24 Court Blocks Bush Administration Clean Air Act Changes A federal appeals court on Wednesday blocked new Bush administration changes to the Clean Air Act after numerous states and cities argued the new rules would harm the environment and public health. Continue reading
Dec 22 Watch Picturing Space: The Hubble Space Telescope For more than ten years, the Hubble Space Telescope has been helping scientists understand the variety of objects that make up the universe. NASA has plans to start launching its next generation of orbiting telescopes with even more powerful imaging… Continue watching
Dec 17 Watch Survival Battle: Salmon in the Pacific Northwest The presence of salmon in the waterways of the Pacific Northwest has been increasing in recent years, but the Bush administration and some scientists disagree over who can take the credit. Lee Hochberg reports that what the president says is… Continue watching
Dec 11 Watch Mike Leavitt: Environmental Protection Agency Administrator Former Utah Gov. Mike Leavitt became head of the Environmental Protection Agency in November. Since then, the agency has released two controversial proposals aimed at reducing emissions from power plants. Margaret Warner discusses these and other issues with the new… Continue watching
Dec 02 Watch Virtual Colonoscopy A procedure that lets doctors find abnormal growths in the colon through 3-D computer-generated images is at least as accurate as a more invasive conventional colonoscopy, suggests research that was presented Monday. Margaret Warner speaks with the study's lead author,… Continue watching
Dec 01 Watch Computer Worms and Viruses Computer security technologists are racing to find ways to block ever-more complex computer worms and viruses that burrow into computers -- usually via e-mail -- and wreak havoc on network systems. Continue watching
Nov 18 Watch Amputees Reconnecting Scientists are discovering new ways to help amputees reconnect with the functionality of their missing limbs. Tom Bearden reports on this cutting-edge technology. Continue watching