Scientists discovered 24 new deep-sea species, and an entirely new evolutionary branch. Finding a new superfamily, one researcher explained, is like discovering dogs when you already knew about bears and cats. The discovery was made in the Clarion-Clipperton Zone, a vast stretch of Pacific Ocean between Hawaii and Mexico. The Trump administration is now fast-tracking mining permits there. Over 90 percent of species in the zone still haven't been named. Researchers are working as fast as they can, because a named species gets what one scientist called a "passport for living" — something policymakers can actually protect. Today's newsletter covers this and nine other stories, from the science of sleep positions to cocaine in Bahamian shark blood.