Watch this trippy video of microscopic creatures to make up for all those times you've looked through a microscope and been disappointed.
The Dead Sea earned its name because its 33 percent salinity prevents the growth of most organisms. It's one of the world's saltiest bodies of water which is why microbiologists were surprised to find thick biofilms on its sea floor.
Clusters of islands poked through hot oceans 3.4 billion years ago, when the world still had no oxygen and the seas churned under a pallid, overcast sky. But life thrived on Earth even then, scientists say - and now they have the world's oldest fossils to prove it.