South Africa's Makhonjwa Mountains are home to some of the oldest rocks on the planet – but not everything in this magnificent landscape originated on Earth. Scientists say they've discovered trace evidence of extraterrestrial organic matter buried within volcanic sediment from over 3.3 billion years ago.
Many scientists think some of the building blocks for life on our planet may have arrived as space-faring molecules; the new discovery in South Africa adds further weight to this tantalising possibility.
Whatever. I don't care one way or another, though it's pretty annoying that perfessers get paid with our tax dollars to theorize about this sort of thing.