For the past 65 million years, mammals have thrived across nearly every corner of Earth. In this time span, they have shaped ecosystems with their adaptability, diverse behaviors, and interactions ...

Across their 10,000 species, sea slugs sport striking colors, external gills, and even the ability to regrow a body from a ...

They shuffle through the night, snuffling softly under hedges, and most of us never notice they’re there. Yet if you’re lucky ...