Smallpox has killed 500 million people this century alone, making it the deadliest disease known to man.

CENTERFORSECURITYPOLICY: Center For Security Policy

The number of lives claimed in the United States by cantaloupes contaminated with a dangerous bacteria climbed to 29 this week, making the 28-state wide outbreak outbreak of listeriosis the deadliest in the United States since 1985, according to the Centers for Disease Control and Prevention (CDC).

FORBES: Death Toll from Killer Cantaloupes Still Climbing

Late in the summer ten kids with advanced neuroblastoma, one of the deadliest childhood cancers, began undergoing a radical new gene therapy with a breathtaking goal--to fight the disease not by deploying often inadequate chemotherapy and radiation but by jiggering the immune system to attack tumors it otherwise ignores.

FORBES: Do-It-Yourselfer