April 28
Celebrate Save the Frogs Day. See savethefrogs.com/day
May 23
Extreme Mammals: The Biggest, Smallest, and Most Amazing Mammals of All Time opens at the American Museum of Natural History in New York City. See www.amnh.org
May 24–27
Earth and space scientists present new findings at the 2009 Joint Assembly in Toronto. Visit www.jointassembly2009.ca
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