Quote:

---

Q: If we burn all the available fossil fuel reserves, where do we get to? A: If you burn it all at once, there is some chance of getting above the cretaceous level, but lots of uncertainty, including how much reserves there really are. In a “burn it all” future, it’s likely to get really hot: +6 to 7C.

Q: We know if we stop emitting, it will slow down global warming. But from geology, what do we know about removal? A: Anything that increases weatherabilty of rocks. But seems unlikely that we can make it go fast enough to make a difference, at an economic level. Key question is how much energy we would we need to do it, e.g. to dig up shells from ocean bed and allow them to carbonate. It’s almost certainly easier to keep it out of the air than to take it out of the air.

---

Quote:

---

Of course. But those were eras in which most of our current ecosystem would die. And in the transition, which would be a bitch, humans would probably go extinct.

---

Quote:

---

The earth will survive anything WE can do to it. But we may not. It's really up to use to decide how much trouble we want to make for ourselves.

If this were a spaceship, we would be taking far better care of it. Well, it IS a spaceship, it's just that people don't see it that way.

---

Quote:

---

Originally posted by SIGNYM:
And the change is very fast. For example, it took the Siberian Traps a half-million years to release the amount of carbon dioxide that we've released in 200 years.

---