When not on the move, snails use mucus to stick to plants and other objects.

These three scientists, John B. Goodenough, M. Stanley Whittingham and Akira Yoshino (from left), have won the 2019 Nobel Prize in chemistry for their work on lithium-ion batteries.

Chemists created a new form of carbon called cyclocarbon. The 18-atom ring is illustrated here using data from an atomic force microscope. Bonds between the atoms are alternately longer and shorter, giving the ring nine sides.

To reshape living tissue, surgeons usually cut into cells and stitch the wound. This type of surgery creates scars. A new, painless approach would damage few cells and might take only a few minutes.