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Science & Society

Trauma surgeon studies gun violence stats — and was one

Joseph Sakran is trying to help counter the U.S. epidemic of gun violence with data.

Life

Hybrids reveal the barriers to successful mating between species

Scientists don’t understand the process of speciation, but hybrids can reveal the genes that keep species apart.

Animals

Scary as they are, few vampires have a backbone

Researchers speculate on why there are so few vampires among vertebrates.

Physics

Photons are caught behaving like superconducting electrons

Light particles, or photons, swap energy like electrons in a superconductor.