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— Rusty Schweickart"While we didn't know the dinosaurs personally, we do know that they were wiped out by an asteroid impact."
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I agree that we should go back to the moon and on to Mars. We should treat all objects in the solar system, including comets and asteroids, as exploration targets.
— Neil deGrasse Tyson
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Global warming, along with the cutting and burning of forests and other critical habitats, is causing the loss of living species at a level comparable to the extinction event that wiped out the dinosaurs 65 million years ago. That event was believed to have been caused by a giant asteroid. This time it is not an asteroid colliding with the Earth and wreaking havoc: it is us.
— Al Gore
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