Judge Extends Block on N.I.H. Medical Research Cuts

A federal judge in Massachusetts indicated she would move quickly to consider a more lasting injunction after hearing a laundry list of potential adverse effects of the Trump administration move to cut billions in funding.

This Tiny Fish’s Mistaken Identity Halted a Dam’s Construction

Scientists say the snail darter, whose endangered species status delayed the building of a dam in Tennessee in the 1970s, is a genetic match of a different fish.