Water that is nearly five times saltier than the ocean is deadly to most animals. But in Utah’s Great Salt Lake, scientists have found a tiny roundworm living in these harsh waters. The organism, called Diplolaimelloides woaabi, was recently described in the Journal of Nematology.¹ Its discovery gives a clear example of how life can function at the edge of what is possible. More than adding a new species name, this worm shows features that precisely fit its environment. Researchers...