'Lively writing about science and nature depends less on the offering of good answers, I think, than on the offering of good questions,' said David Quammen in the original introduction to "Natural Acts". For more than two decades, he has stuck to that credo. In this updated version of his first essay collection, Quammen's lively curiosity leads him from New Mexico to Romania, from the Congo to the Amazon, asking questions about mosquitoes, dinosaurs and cloning among other subjects. This revised and expanded edition returns to print Quammen's best-loved "Natural Acts" columns, which first appeared in "Outside" magazine in the early 1980s, and includes recent pieces such as "Planet of Weeds", an influential Harper's cover story. The new "Natural Acts" is an eye-opening journey that will please both Quammen fans and newcomers to his work.