Study supports hypothesis something crashed into Earth 13,000 years ago, led to extinction of ice age animals
2019-10-30 11:00:38
Around 13,000 years ago, giant animals such as mastodons, mammoths, saber-toothed cats and ground sloths disappeared from the Earth. Scientists have found evidence in sediment cores to support a controversial theory that an asteroid or a comet slammed into Earth and helped lead to this extinction of ice age animals and cooling of the globe.