In the Aug. 19 SN: Bulletins from the tick wars, roots of Rwandan genocide, spin-resistant spiders, making mums blue, tardigrade saga continues, HIV antibodies from cows, Maxwell’s demon aces memory test and more.
DARK MARK This dark form of a turtle-headed sea snake is shedding its skin, and maybe some toxic trace metals along with it.
FLOWER POWER This 3-D reconstruction reveals what the first flowers may have looked like. Female reproductive organs (green), male reproductive organs (yellow), and petallike structures (white) are shown.
H. Sauquet and Jürg Schönenberger
EXTREME SURVIVALIST Genetic analysis of tardigrades like this Ramazzottius varieornatus shown in a scanning electron micrograph are revealing what makes the tough little creatures tick.