Organizers called off the Independence Day Parade late Friday, citing an extreme heat warning with temperatures expected to reach up to 115 degrees. The evening fireworks display remains scheduled.

Spread by parasitic worms that can infect via a splash of water, schistosomiasis causes debilitating symptoms. It hits kids hard. A board game teaches how to prevent it.

The shake-up is believed to be an effort to ensure the military's loyalty to the Communist Party and its leader, Xi Jinping.

Poets like Walt Whitman and Langston Hughes have written movingly about America.

To clean animal skeletons used for research and education, scientists are turning to a new type of beetle larva. These "superworms" provide an efficient solution to a difficult challenge.