To gear up for their Expedition Week, National Geographic is letting you choose which conservation-focused expedition they will sponsor next. The two contenders are Trip Jennings, who wants to save elephants from the ivory trade; and Ben Horton, who wants to stop shark poachers in Costa Rica. It's a tough competition: Jennings is one of NG's Adventurers of the Year, and Horton was the organization's first Young Explorer Grantee. Head over to the voting page and support your cause of choice.
-- Lisa Lombardi