Bubble, bubble, toil and trouble,
Over three billion years ago,
Volcanic heat met water
And something started to grow.
Perhaps deep in the ocean
Or perhaps in springs on land,
Bubbles found in rocks today
Are clues to understand.
by Kate Rauner
Searching for traces of Earth’s earliest life is hard and there are plenty of skeptics, because the signs aren’t bones or shells, but “blobs and knobs and something that they interpret as filaments.” People keep trying because “it would be incredibly exciting to find some sign of something that was living 3.8 billion years ago.”
For more on what that “spongy kind of gloopy soup” may have been, see NPR tiny fossils and
My apologies for mangling The Bard, but I needed the bubbles. Here’s Macbeth:
Double, double toil and trouble;
Fire burn and caldron bubble.
Cool it with a baboon’s blood,
Then the charm is firm and good.