Oct 17 New Stem Cell Techniques Spare Embryos By PBS News Hour Two teams of researchers working independently announced Sunday that they discovered ways to create embryonic stem cells without destroying embryos, a development that scientists believe may make the field more politically and ethically acceptable. Continue reading
Oct 17 Watch Embryonic Stem Cell Tests A interview with health correspondent Susan Dentzer explains two new techniques for creating stem cells and the ethical and religious concerns surrounding them. Continue watching
Oct 14 Experts Debate Long-term Environmental Impacts of Katrina By Admin, PBS News Hour More than 193,000 barrels of oil -- some 7 million gallons -- spilled along the Louisiana coastline in August 2005 when Hurricane Katrina hit. Continue reading
Oct 12 China Launches Two Astronauts in Second Space Mission By PBS News Hour China successfully launched two astronauts into Earth orbit Wednesday two years after making its first foray into human spaceflight. Continue reading
Sep 23 Hurricanes Mark Unusual Spike in Already Active Storm Cycle By PBS News Hour Although residents of the Gulf Coast need little confirmation, meteorologists say 2005 is already an unusual year for the North Atlantic Ocean in terms of the number and strength of hurricanes originating there. Continue reading
Sep 02 Spirit Reaches Mountain Peak on Mars By PBS News Hour NASA's rover Spirit has reached the summit of a bedrock mountain on Mars, and from that vantage point, mission managers will plot the robotic explorer's next move among the numerous intriguing surrounding geologic features. Continue reading
Aug 22 Scientists Announce Potential Stem Cell Breakthrough By PBS News Hour Harvard researchers announced Monday that they have found a way to fuse adult skin cells with embryonic stem cells, which could lead to the creation of stem cells without having to destroy human embryos. Continue reading
Aug 18 NASA Delays Next Shuttle Launch to Address Falling Foam By PBS News Hour In light of what they learned from the space shuttle's return to flight and the reoccurring problem of foam breaking off the external fuel tank during takeoff, NASA officials said they will hold off launching the next shuttle until spring… Continue reading
Aug 16 Watch Chimeras: Animal-human Hybrids The NewsHour Science Unit looks at the debate over scientific research that involves transplanting human stem cells into animal brains. Continue watching
Aug 15 Watch Clearing the Air Mayors across the country have united to pledge support for the Kyoto Protocol despite the Bush administration's concerns the treaty to curb greenhouse gases will hurt the U.S. economy. Continue watching