John Shaw / Yellow-billed cardinal (Paroaria capitata). Pantanal, Brazil, September.

Pete Oxford / Squirrelfish (Holocentrus adscensionis) Halfmoon Caye, Lighthouse Reef Atoll. Belize.

Mark Moffett / Centipedes scewered for sale as food, Xiao Chi Jie Market, Beijing, China

Mark Moffett / Scorpions skewered for sale as food, Xiao Chi Jie Market, Beijing, China

Mark Moffett / Students picking lettuce to prepare salad under direction of Michelle Obama and White House chef Sam Kassat, White House, Washington D.C.

Mark Moffett / President Obama's personal chef Sam Kass in Michelle Obama's vegetable garden, White House, Washington D.C.

Norbert Wu / Common Squirrelfish (Holocentrus adscensionis) Pennant Bannerfish (Heniochus chrysostomus) and Emperor Angelfish (Pomacanthus imperator) near soft coral ledge, Raja Ampat Islands, Indonesia

Matthias Breiter / Polar Bear (Ursus maritimus) cub watching cook through window, Churchill, Manitoba, Canada