The answer to today's Geo Quiz is Lake Turkana in northern Kenya. It's located in a remote part of Africa's Great Rift Valley where a team of scientists has discovered the oldest footprints ever found that look completely modern.

Lake Turkana, Kenya

Anchor Lisa Mullins gets details from anthropologist John Harris who's working with Kenya's National Museum. What can footprints tell us about life 1.5 million years ago? Listen: