This Week in Science: A Grim Measles Milestone, a Lifespan Limit, And More

U.S. measles cases have topped the highest annual total in 35 years, signaling a major public health rebound and renewed concern for vaccination.

Other studies in the roundup suggest the Milky Way may once have flipped, and that human lifespan may have a modeled upper limit.

Researchers also reported parasite-linked longevity effects in ants, plus new work on somatic mutations, modern life, and heat control.