In the Dec. 23 & Jan. 6 SN: Our top stories of 2017, grounded pterosaur hatchlings, protectors of the Dead Sea Scrolls, a counterintuitive metamaterial, neutron star sizing, arrow of time reversed, E. coli in flour and more.
IT’S ALIVE Living bacteria can give 3-D printed materials special powers, such as producing form-fitting wound dressings. Here, such a material is printed on a doll’s face and stained to fluoresce blue.
Manuel Schaffner and Patrick A. Rühs
DEEP FIXERS Scientists collected ocean water at different depths using this rosette (center), revealing that an abundant group of nitrite-oxidizing bacteria called Nitrospinae dominate carbon “fixation” in the deep ocean.
DOUGH DEBACLE In 2015 and 2016, E. coli-tainted flour sickened dozens of people in the United States, most of whom had eaten raw dough or batter while baking.