Southern African dinosaur had irregular growth

Anyone who's raised a child or a pet will know just how fast and how steady their growth seems to be. You leave for a few days on a work trip and when you come home the child seems to have grown an inch! That's all well and ...

Time for a mass extinction metrics makeover

Researchers at Yale and Princeton say the scientific community sorely needs a new way to compare the cascading effects of ecosystem loss due to human-induced environmental change to major crises of the past.

Megafauna extinction mystery unlocked

The rapid extinction of giant animals including wombat-like creatures as big as cars, birds more than two meters tall, and lizards more than seven meters long that once roamed the Australian continent is a puzzle that has ...

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