In the Oct. 28 SN: Real-life vampires, the ultimate flu shot, no rings for Pluto, tsunami debris stowaways, jellyfish flouts sleep stereotypes, honey carries pesticides, teen concussion stats, a shape-shifting robot and more.
DANGER DETECTOR In planarians (Schmidtea mediterranea shown), a protein called TRPA1 detects hydrogen peroxide, a molecule produced when cells are damaged. These new results give hints about the evolution of human pain.
Chris Petersen/Northwestern University
DREAM MAP The brain’s mapmaking grid cells keep doing their jobs, even as rats sleep, two new studies find.
WANDERING MIND In an anthology of wide-ranging essays, neurologist and author Oliver Sacks celebrates the beauty — and mysteries — of the world and the people, animals and plants that inhabit it.