Two of the study's co-authors, Mark Clementz and Carolina Gutstein, are pictured with an outcrop bearing whale fossils.

A fossil in South Africa is evidence that therapsids, one of our ancestors, were laying eggs 252 million years ago. Julien BenoitVincent FernandezJennifer Botha You can’t make a mammal-ette without ...

A remarkable new discovery is shedding light on one of the greatest survival stories in Earth's history, and answering a decades-old scientific mystery. Lystrosaurus, a hardy, plant-eating mammal ...

"We took mammal food webs across sub-Saharan Africa to see if we could combine multiple local observations into a highly generalizable analysis that could help us better understand both environmental ...

The scientific wonderers at What If travel back to the age of mammals to see how our planet recovered after the death of the dinosaurs.

The Americas, which encompasses North, Central and South America and the Caribbean, has a huge variety of landscapes – and therefore animals. From imposing mountains to desert plains and tropical ...

Menopause happens when the older females of a species remain physically capable of contributing to their group’s survival, even as their ovarian follicles become depleted. This is a rare occurrence ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...