Ice Climbing Up Niagara Falls, Scuba Diving With Orcas, Exploring Mexico's "Snot Caves", Diagnosing the Invisible Impacts of War,

This week, we dodge humpbacks and killer whales in a feeding frenzy, climb up a frozen Niagara Falls, explore Mexico's poisonous "snot caves", diagnose the invisible injuries of American war veterans, and visit Iraq and Syria's frigid refugee camps.

You can listen to Ice Climbing Up Niagara Falls, Scuba Diving With Orcas, Exploring Mexico's "Snot Caves", Diagnosing the Invisible Impacts of War, online on Radio and Podcast. Open the player on this page to stream the available audio.

Ice Climbing Up Niagara Falls, Scuba Diving With Orcas, Exploring Mexico's "Snot Caves", Diagnosing the Invisible Impacts of War, is an episode from National Geographic Weekend by National Geographic.

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This episode was published on Feb 9, 2015.

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