Health problems of 1911 remain, says Lancet

The Lancet has revisited a 100-year-old editorial examining the biggest medical challenges of the day - and concluded that many still remain.

Rats better than people at diagnosing TB

Want to know if you've got TB? Just spit on a rat. A new study has shown that trained giant African rats are 44 percent better at detecting the disease than trained people using microscopy.