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.
India's Olympic athletes won't be able to fly their country's flag in the opening ceremony. And if they win, the Indian anthem won't play. In fact, the three athletes just learned this week that they would even be allowed to compete.
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.
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.
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.