NPR News: 01-09-2025 8PM EST

222 - 245.86 Ari Daniel

Armin, who's a paleontologist at a natural history museum in central Australia, used those scratches to figure out what the ancient kangaroos ate. His answer, a mix of shrubs and grasses, suggesting that a changing climate that wiped out a single group of plants likely wasn't behind the extinctions. Rather, he thinks humans who arrived in Australia around this time had something to do with it.