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.
Brain scan studies of large groups of people can tell us things about what the “average” brain looks like. But when the sample itself isn’t average, are the brains?
BRAIN GAME Despite being relatively large, a brown bear’s brain is sorely lacking in nerve cells, while a raccoon’s cat-sized brain is packed full, finds a new study that tallies these neurons in carnivores.
Jeremy Teaford/Vanderbilt University
KEEP YOUR DISTANCE Babies born to moms living within one kilometer of fracking sites are more likely to be underweight than those born to moms living three kilometers or farther away, a new study suggests.