Scientists trying to protect the endangered Sumatran orangutan have adopted an unusual tool for their work: Drones. These unmanned aerial vehicles are a quick and inexpensive way to monitor orangutans and their habitat.
Noc was a beluga whale that spent most of its life at a naval research facility in San Diego. Scientists studying Noc say he imitated human sounds. They have published Noc's human-like sounds in a new study in the journal Current Biology.
The polls closed on Monday in India after a long election. Still, voters must wait four more days for the results. Reporter Rhitu Chatterjee spent the last day of elections with her parents in Kolkata.
We're discussing the science of kissing with Sheril Kirshenbaum, author of the new book "The Science of Kissing: What Our Lips Are Telling Us." Kirshenbaum recently spoke with the The World's science correspondent, Rhitu Chatterjee.
Uber bills itself as the "safest ride on the road" for its customers, but the company is now banned from operating in New Delhi after one of its drivers has been accused of raping a passenger. This case is the latest to draw attention to the dangers facing Indian women.
In a new book, journalist Fred Pearce argues population growth is not a problem and that focusing on it is distracting people from the earth's real ills. Rhitu Chatterjee spoke to Pearce and brings some clips to the show.