25 Most Provocative Questions Facing Science, Landing on Mars
:: The NYTimes celebrates 25 years of covering science by posing "25 of the most provocative questions facing science." (ID and PW: podbay.)
:: "A British-built craft designed to scour the surface of Mars for signs of life is scheduled to land on the planet on Christmas Day, scientists said Tuesday." See Question 3 from the NYTimes.