Scientist

We're not saying that there was life on Bennu. I don't see any evidence for that. But what we are saying is that we see this whole array of really complex, useful for life organic molecules, plus water, plus these salts would have provided lots of bioessential elements.

And we imagine in the early salt system, asteroids like Bennu may have been raining down on the earlier, would have provided this sort of package of all of these nutrients that the Earth needs to eventually become habitable.

It enables us to answer these really, really big questions about where life began and who doesn't want to know about how life started here.

Every second of every single day, thousands of trees are being cut down. In fact, in just the one minute that I've been talking, an area the size of 60 football fields has been wiped out.

Scientists warn that a large part of Antarctica is melting and cannot be stopped.