Carol Rittner reflected on events that have changed the United States and the world since she last taught college students about the Holocaust in 2015: Donald Trump’s candidacy, marchers in ...

Biologists have uncovered a new mode of communication inside cells that helps bacterial pathogens learn how to evade drugs.

An IT failure that forced some hospitals to rely on pen and paper for 12 hours follows closely on the government setting up a new centre to try to fix the plethora of weak old systems.