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South Korean scientists report a major advance in the production of stem cells for medical research. Scientists say they have discovered a more efficient method for making new cells. In the United States, embryonic stem cells are at the center of a political and ethical debate.

The House is expected to vote Tuesday on legislation that would loosen restrictions on federal funding for embryonic stem cell research. President Bush says he'll veto the bill. The bill's supporters say some embryos should be donated for research. But opponents, who believe life begins at conception, are offended by the idea.

Pere David's Deer was near extinction before a French missionary helped rescue it at the turn of the 19th century. The animal's story may reflect new environmental awareness in China, despite social and economic pressures still threatening the country's wildlife.

The Army may have met its recruiting target for July, but the year-to-date goals have not been met. The Army Reserve and the National Guard have also suffered shortfalls in their recruiting missions. Can the United States continue to rely on an all-volunteer army? Melissa Block talks with Laurence Korb, a senior fellow at the Center for American Progress.

Each year, students at Dartmouth Medical School honor the people who donated their bodies to science for use as cadavers... and learn more about the lives those donors led. Susan Keese of Vermont Public Radio attended this year's ceremony.

The "Chicago Boys" -- Chilean men who studied free-market economic theories at the University of Chicago in the 1950s and '60s -- are often credited for Chile's relatively healthy economy. Chicago Public's Catrin Einhorn reports from Santiago on their legacy.

NASA officials say the agency's engineers have found no easy answers to the problem of falling foam during the liftoff of space shuttles -- and a scheduled September launch will likely be delayed. Two NASA engineering teams reported on the problem Thursday.

NASA's latest voyage to the planet Mars is underway. An Atlas V rocket carrying the Mars Reconnaissance Orbiter blasted off on time following two days of scrubs due to technical glitches. The orbiter will take about seven months to get to Mars, and will circle the planet for four years.

Five years ago, Tom DeBaggio told his personal story about his battle with early-onset Alzheimer's. A return visit finds the former nursery owner less sure of himself — and scared to death of getting lost again.

Over the years the scientific community has largely decided not to take part in public debates over creationism v. evolution. Now they're being careful about how they take on Darwin's latest critics — advocates of "Intelligent Design," the argument that life is too complex to have evolved without help.