Tafenoquine could help prevent the recurring form of malaria, but the drug may also be dangerous for people who have a certain genetic mutation. Read more

New Horizons may have seen a hydrogen wall just past the edge of the solar system, where the solar wind meets the stuff of interstellar space. Read more

Researchers say that they have confirmed CRISPR/Cas9 edits of a heart disease–causing version of a gene, but critics still have doubts. Read more

Defenders of an ice-free inland passage for early Americans make their case. Read more

Injecting a veil of tiny particles into the atmosphere might reduce global warming, but it could also lower crop yields. Read more

Contained clusters of rotavirus and norovirus caused more severe infections in mice than the same viruses working solo. Read more

A new CDC report tallies neurological and developmental problems, in addition to birth defects, possibly due to Zika in U.S. territory–born babies. Read more

A comprehensive look at the brains and behavior of retired professional football players and retired hockey players finds no signs of early dementia. Read more

The first coronal mass ejection observed fleeing another star was as massive as scientists expected, but carried less energy. Read more

Pundits claim that we’re all living in political echo chambers. A new study shows that, on Twitter at least, they’re right. Read more