Earth. Yet, a region in China provided a haven for plants and animals, revealing unexpected resilience. This discovery, ...
About 250 million years ago, at the end of the Permian period, something killed some 90 percent of the planet's species. Less than 5 percent of the animal species in the seas survived. On land ...
Bookended by extinctions, this era saw huge shifts in the diversity and dominance of life on Earth, ushering in the appearance of many well-known groups of animals that would go ... event devastated ...