Molecules face the big chill
Double-teaming cooling techniques pushes temperatures below previous limit
![molecules](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/08/082817_EC_cold-molecule_main.jpg?fit=860%2C460&ssl=1)
PLAYING IT COOL Molecules are reluctant to chill out, but scientists have taken a step toward making them ultracold. Physicists chilled molecules below a temperature barrier, using lasers and magnetic fields to trap and slow the molecules.
Jose-Luis Olivares/MIT