Cancer

Elephants did not evolve to become huge animals until after they turned a bit of genetic junk into a unique defense against inevitable tumors.

The subtle mechanics of densely packed cells may help explain why some cancerous tumors stay put while others break off and spread through the body.

Analyzing individual cancer cells could reveal the answer to some of the disease’s most enduring mysteries.

Population expansion may be a major driver in the evolution of cooperation, with implications for new antibiotics, cancer treatments and perhaps even human behavior.