Kelli E. Boyd

Wildlife photographer Steve Winter and cameraman Bertie Gregory capture the lives of jaguars in the Pantanal of Brazil; a mother jaguar teaches her cub how to survive, while a male jaguar dives headfirst into a river to tackle a six-foot-long caiman.

The tornado that struck El Reno, Oklahoma, on May 31, 2013, defined superlatives. It was the largest twister ever recorded on Earth.