Science

Science and natural history writer Hannah Holmes. Her new book is The Secret Life of Dust: From the Cosmos to the Kitchen Counter, the Big Consequences of Little Things. (John Wiley & Sons) Among the interesting facts youl find in the book is this: within a juice glass sitting in the sun, you would find 25,000 microscopic pieces of dust, at a minimum. Holmes is also a regular contributor to the Discovery Channel Online.

Astronaut Jim Newman. Dr Newman has logged many days in space, including many space walks. In 1998 he was a member of one of the first crews to work on the International Space Station, Endeavor. He'll talk about what it was like doing construction in space. Next year, NEWMAN will go back to space to work on and repair the Hubble Telescope.

Film director Rob Sitch. He and his creative team at Working Dog, got their start in morning radio, then switched to TV. They made their first feature film The Castle in 1997. Their newest film The Dish is based on the true story of how three Australian scientists made possible the worldwide broadcast of Neil Armstrongs first steps on the moon. The film stars Sam Neill and Patrick Warburton ("Puddy" on Seinfeld).

Volcanologist and resident geologist for the U.S. Geological Survey Dan Miller. He also heads the Survey’s Volcano Disaster Assistance program which helps developing countries in the event of volcanic eruption. Miller was part of the team of geologists who studied Mt. St. Helens and predicted a blast before the turn of this last century. Mt. St. Helens blew May 18th, 1980. His team studied the frequency and past characteristics of eruption in Mt. St. Helens and put together hazard assessments for local officials.

Doctor Mel Greaves, author of Cancer: The Evolutionary Legacy (Oxford University Press. Greaves is professor of cell biology and director of the Leukemia Research Fund Centre for Cell and Molecular Biology at the Institute of Cancer Research in London. Greaves places cancer in its evolutionary context, using examples from the 15th century to the most contemporary research. Greaves talks about the importance of looking at cancer through a Darwinian lens. He says there may be implications for research, prevention, and treatment.

Anthropologist and co-founder of the Argentine Forensic Anthropology Team, Mercedes Doretti. The group was founded in 1984 to investigate the fate of persons who had been “disappeared” by the former Argentinean military regime. The team consisting of an anthropologist, pathologist, radiologist, ballistic expert, and an archaeologist exhume grave sites, and the sites of massacres to determine the truth behind what happened, and to identify skeletal remains. Since their initial work in Argentina, the EAAF has worked in many other countries to investigate human rights abuses.

An expert in forensic anthropology Dr. Clyde Snow He first developed the forensic team approach to investigating human rights abuses and acted as trainer and mentor to the EAAF team.

Journalist Eileen Welsome talks about her book, The Plutonium Files: America’s Secret Medical Experiments in the Cold War (Dial Press). The Plutonium Files is about the thousands of secret, government sponsored radiation experiments conducted on unsuspecting Americans during the Cold War. Welsome won the Pulitzer Prize for her initial research and writing on these experiments. Her book includes new facts about the Manhattan Project, the scientists who conducted the research, and the experiments’ victims.

Inventor and ex-magician David Levy. His inventions include a tiny keypad - the size of a credit card, a tattoo whose design can be changed at will, and a devise that seals severed arteries in one minute. In 1996, at MIT, he won the Lemelson-MIT Student Prize, which acknowledged him as one of the nation's premier young inventors.

Barbara Bogaev interviews astronomer and writer Donald Goldsmith about the future of space travel. He was the consultant to the PBS documentary film "Voyage to the Milky Way" (TV/Books) and is the author of the companion book.