Cheetahs, the fastest mammals on Earth, are now in a race against extinction. It’s estimated that fewer than 7,000 exist in the wild. John Yang speaks with Laurie Marker, a woman who has already helped dramatically reduce one threat to cheetahs and is tackling new ones that have emerged, for our Weekend Spotlight. PBS News is supported by - https://www.pbs.org/newshour/about/funders