SQUEEZE PLAY When trapped inside tight tubes, cancer cells divide unevenly. But as their membranes bulge (shown with yellow arrows), the cell division gets a little less distorted.
W. Xi et al/ACS Nano 2016
TOUGH BITE Deer ticks are now spreading a new species of bacteria that causes Lyme disease.
BUYBACK In 1996, Australia initiated a program to purchase and destroy certain types of long guns, including semiautomatic weapons. Over the next four years, the country collected more than 650,000 guns.