Body size plays a critical role in mammalian ecology and physiology. Previous research has shown that many mammals became smaller during the Paleocene-Eocene Thermal Maximum (PETM), but the timing and ...

Sea surface and subsurface temperatures over large parts of the ocean during the Eocene epoch (55.5-33.7 Ma) exceeded modern values by several degrees, which must have affected a number of oceanic ...

This is a reconstruction of the early Eocene (52 million-year-old) fauna that inhabited the rainforest around a northern British Colombia lake. The tapiroid Heptodon drinks in the shallows, while the ...

Earth's tropical rain belt, responsible for monsoons that sustain billions of people and vibrant ecosystems, has long been a reliable feature of the planet's climate. But new research reveals this ...

Throughout Earth's history, the planet has been struck by multiple asteroids, some so large, like the Chicxulub Impactor, that Earth's climate was altered to the point of a mass extinction event.