An enzyme pulled from toxic bacteria can enter the organelle and perform single-nucleotide DNA swaps.

SARS-CoV-2 generally attacks the lungs, but researchers are also stressing its effects on the brain in a fraction of patients.

Pier Paolo Pandolfi left Harvard University last year following allegations of sexual harassment, and has since been accused of research misconduct.

Some in-person instruction will be required to maintain a student visa, and universities must tell the US government of their plans to open by July 15.

An open letter points to outbreaks that cannot be explained by large droplets and contact with surfaces alone.

The Natural History Museum and Botanical Garden is still assessing the damage from a June 15 fire.

Vaccine experts divided on whether that level of protection is too low or too demanding.

An influenza virus identified in pigs in China has a concerning mix of genes, but experts say there is no way to know if it will evolve to be transmissible between humans.

A survey of hospitalized patients finds some suffer fatigue, ischemic stroke, delirium, and other symptoms.