Even the day an asteroid struck Earth 66 million years ago was more favorable for life than any day on Mars in at least the previous two or three billion years.

“66 million years ago was a nicer day for life on earth than any day on mars in the last you know two or three billion years at least and we know that because mammals survived and birds survived and all sorts of life survived that day whereas there's no mammal that are now that could survive unprotected on the surface of mars um”