It was probably a bit of both, although the timing is tricky to pick out of the geological record. We have the impact crater for the asteroid, we have the iridium layer left by it, we have the shocked rocks in Texas from the impact. There is no doubt that a large asteroid hit right at the time that the dinosaurs died out. Also, we have the lava layer in India, we know the effects of such massive volcanoes, etc. And no, it wasn't suffocation so much as blocking out the sunlight.<quoted text>
That may be the intention but not the practice. What has science offered in lieu of the "unobservable" past, if not invented stories? Science tells us that a six mile wide astroid slammed into the Yucatan Peninsula and took out the dinosaurs in one fell swoop. On the other hand, it could have been a series of enormous volcanic eruptions we are told. Nope. The Deccan lavas spewed immense amounts poisonous sulphur dioxide into the atmosphere and suffocated them all. That's what happened! Is this the caliber of publicly available evidence you're referring to?
Yes, there is publicly available evidence of these claims.
Actually, I disagree with this. It is important to be especially skeptical of ideas you *want* to be true.Personal experience. Yes, you can trust your personal experience without science's stamp of approval.
And then those theories are tested by observations and the attempt is made to show them wrong. If many such attempts fail, we gain confidence in their validity.The same thing that happens when science speculates, theories.