The Mesozoic, which stretched from about 252 million to 66 million years ago, was a pivotal period in Earth's history. In addition to being the age of the dinosaurs, it was when the supercontinent ...

Researchers investigated the Mesozoic Era's atmosphere and vegetation by studying oxygen isotopes in dinosaur tooth enamel. This is a replica of a Stan™ T. rex tooth. Photograph: Thomas Tütken.

For millions of years, through the Triassic and the Jurassic that followed, large dinosaurs kept such forests open and sunlit down to their trunks by feeding and trampling on plants. A sunny stand of ...

I’m a journalist, sort of, which means I have to keep a rigorous eye on the big issues confronting the world today, as well as the big issues that confronted the world going back millions of years.

Two mass extinctions occurred early in the Mesozoic Era shortly after dinosaurs appeared, and multiple lines of evidence suggest that dramatic global climate change events were contributing factors.

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