react

The splintered fluorine atoms, the researchers report, are safely sequestered by reacting them with potassium hydride in solution to form potassium fluoride, a nontoxic ingredient in toothpaste.

Ms Riley's parents, roommates and other friends and family cried as the verdict was read, while Ibarra did not visibly react.

They started by playing and reacting to video games, but in the past decade the group of friends have branched out to comedy sketches, travel challenges, podcasts and a dating show.

The researchers examined the thermal performance of a TCM reactor powered by strontium chloride, which gives off heat as it reacts with water vapor in the air.

“You can’t control how people are going to react to things,” he says.