Were dinosaurs killed off by asteroid or volcanoes? It's complicated

Were dinosaurs killed off by asteroid or volcanoes? It's complicated

5 years ago
Anonymous $Dftgs0JzgE

https://phys.org/news/2019-02-dinosaurs-asteroid-volcanoes-complicated.html

Two studies published Thursday in the journal Science contributed to a longstanding scientific debate about what exactly finished off the mighty reptiles.

Before the 1980s, the dominant theory had been that huge and prolonged volcanic eruptions caused a rapid and deadly shift in the planet's climate by sending vast clouds of ash, gas and dust into the atmosphere.

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