August 27th, 2007Une équipe franco-américaine travaillant au Centre d'enseignement et de recherche sur l'environnement et la société à l'École normale supérieure de Paris vient de réaliser à ce sujet une étude, publiée dans les «Comptes rendus de l'Académie des sciences américaine» montrant que la densité des habitations peut même amplifier la propagation du feu.
August 8th, 2007Audio from Colorado Public Radio: On average, someone who climbs a fourteener winds up pumping about two hundred dollars into the state's economy, according to a study by Catherine Keske and colleagues.
July 19th, 2007Ice loss from glaciers and ice caps is expected to cause more global sea rise during this century than the massive Greenland and Antarctic ice sheets, according to a new University of Colorado at Boulder study.
June 19th, 2007NOVA takes viewers to the stark Australian outback in search of the elusive bones of one of the world's most bizarre prehistoric creatures—a giant predatory marsupial called Thylacoleo. Giff Miller provides commentary.
May 1st, 2007The marsupial lion is just one of numerous big-bodied animals, or "megafauna," that went extinct in Australia between about 50,000 and 45,000 years ago. Who or what killed them off, and why over such a short period? Gifford Miller, a professor of geological sciences at the University of Colorado at Boulder, has been studying this question for years. In Miller's opinion, humans, who are thought to have arrived in Australia not long before the megafauna went extinct, had something to do with it, though no one has yet been able to conclusively show how—or, for that matter, to rule out climate change or other possible causes. Here, Miller describes what role human-started fires might have played, what he'd ideally like to find to help solve the mystery, and what lessons the mass extinction has for us today. Interview linked to NOVA documentary Bone Diggers.