Feb 03 Watch Unanswered Questions About Shuttle Columbia The loss of space shuttle Columbia raises questions about the safety of NASA flights and the agency's budget limitations. Experts discuss the future of the space agency and whether space travel is worth the risk of losing astronauts. Continue watching
Feb 01 Space Shuttle Columbia Disintegrates Upon Re-Entry The space shuttle Columbia disintegrated upon re-entry over Texas Saturday morning moments before its seven-member crew was scheduled to land in Florida. Continue reading
Feb 01 NASA Statement on the Loss of the Space Shuttle Columbia By PBS News Hour The following is the text of a NASA statement on the loss of the Space Shuttle Columbia. Continue reading
Jan 07 Clonaid’s Deadline Passes With No Proof of Human Clone French company Clonaid's self-imposed 10-day deadline for providing DNA proof of the existence of the first human clone passed Tuesday without any new evidence from scientists. Continue reading
Jan 06 Watch You’ve Got E-mail E-mail, used by almost 90 million Americans, has been changing human communication for almost a decade. Terence Smith reports on e-mail and its effects on American culture. Continue watching
Dec 31 Watch Water Fight in the Great Lakes Fred de Sam Lazaro reports on a fight over water in the Great Lakes. Continue watching
Dec 27 Watch The Cloning Debate A company called Clonaid claims to have produced the world's first cloned human being. Betty Ann Bowser reports. Continue watching
Dec 12 Watch Forests and Fires Terence Smith discusses the administration's approval of a fire fighting method involving logging and thinning of overgrown forests with the vice president of the Wilderness Society and the executive director of the Political Economy Research Center. Continue watching
Dec 11 Stanford University to Create New Stem Cell Lines Stanford University announced on Tuesday that its researchers will work to create new stem cell lines by employing nuclear transfer technology --a process that can be interpreted as cloning. Continue reading