Come Sail Away: Retired high school science teacher — and adrenaline junkie — Andy Sajor rides his ice boat on a frozen Lake Champlain in New York. Perfect ice sailing conditions call for cold temperatures, a strong breeze and a thick sheet of ice — but not too much snow. Sarah Harris /North Country Public Radio hide caption

itoggle caption Sarah Harris /North Country Public Radio

The Grave Digger team of monster trucks, considered to be one of the most influential monster trucks of all time, is currently celebrating its 30th anniversary and racing in the United States Hot Rod Association (USHRA) Monster Jam series. Doriane Raiman/NPR hide caption

itoggle caption Doriane Raiman/NPR

Relatives of those who died in the 2010 earthquake attend a memorial service at the mass grave site in Titanyen, on the outskirts of Port-au-Prince, Haiti, Thursday. Haitians are marking the second anniversary of the devastating 2010 earthquake with church services throughout the country on what is a national holiday of remembrance. Ramon Espinosa/AP hide caption

itoggle caption Ramon Espinosa/AP

Elicia Andre, who says she used to be much larger — a sign of affluence in Haiti — is now skin and bones. Marisa Penaloza/NPR hide caption

itoggle caption Marisa Penaloza/NPR

The fifth-graders from L.A.'s Pico Union neighborhood, who rarely get to spend time in nature, say it was the best field trip ever. Mandalit del Barco/NPR hide caption

itoggle caption Mandalit del Barco/NPR

Anti-government protesters rest on their collapsed tent following clashes with the police as they called for the resignation of President Ali Abdullah Saleh in Sanaa, Yemen. Ahmad Gharabli/AFP/Getty Images hide caption

itoggle caption Ahmad Gharabli/AFP/Getty Images