WHIRL AWAY Electrons in platinum move in different directions depending on their spin when the metal is heated at one end. Scientists have observed this phenomenon, called the spin Nernst effect, for the first time.
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.
SQUARED OFF Halos around the sun may appear when cube-shaped ice crystals in clouds in the upper atmosphere scatter light (left). In the lab, nearly cubic ice crystals scatter X-rays into similar-looking concentric circles (right).
Left: Pixabay; Right: Courtesy of Ohio State University