Most scientists agree that the impact of an asteroid hitting Earth played a major role in the extinction of dinosaurs but now there's a brand new theory about how exactly that happened.

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US Floats Options to Reduce Water Pulled From Colorado River
The Biden administration released an environmental analysis Tuesday that outlined two ways that seven Western states and tribes reliant on the over-tapped Colorado River could cut their use, but declined to publicly take a side on the best option.
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