Tornadoes killed at least 17 people on Sunday and Monday. But some managed to stay safe in underground shelters like the one at right in Vilonia, Ark. Karen E. Segrave/AP hide caption

itoggle caption Karen E. Segrave/AP

Nepalese search team members rescue a survivor of an avalanche on Mount Everest on Friday. At least 13 Nepalese guides preparing routes for commercial climbers were killed by an avalanche in the most deadly mountaineering accident ever on the world's highest peak. Prakash Mathema/AFP/Getty Images hide caption

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Volunteers unload donated supplies during heavy rains in Darrington, Wash., Friday. One week after a massive mudslide hit nearby Oso, crews are working to find and identify victims. Data about landslides' annual effects are decades old, geologists say. David Ryder/Getty Images hide caption

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A woman comforts a pregnant relative suffering labor pains at a makeshift birthing clinic in the typhoon-battered city of Tacloban, Philippines, on Monday. Erik de Castro/Reuters/Landov hide caption

itoggle caption Erik de Castro/Reuters/Landov

A Thai medic checks bodies for forensic identity in Phang Nga province in southern of Thailand on Jan. 11, 2005. Thousands of people were killed in Thailand after a massive tsunami struck on Dec. 26, 2004. Pornchai Kittiwongsakul/AFP/Getty Images hide caption

itoggle caption Pornchai Kittiwongsakul/AFP/Getty Images