Facial-recognition technology has become ubiquitous thanks to Facebook and other tech companies, but privacy advocates warn it's leading to the loss of public anonymity. We hear about the risks as well as the benefits.
On today's Talking Point, global hunger is a problem that no one philanthropist or charity can solve. But Howard G. Buffett is trying. We talk with him about efforts to grow drought-resistant crops.
Photo: Sheila Scarborough