History
Beethoven’s Cause of Death Revealed from Locks of Hair
DNA from locks of Beethoven’s hair reveals how the composer died, but his hearing loss remains a mystery
Stories by Dyani Lewis
Climate Change
Australia’s Massive Wildfires Shredded the Ozone Layer—Now Scientists Know Why
Smoke from the catastrophic 2019–2020 fires in Australia unleashed ozone-eating chlorine molecules into the stratosphere
Public Health
Kids Get ‘Long COVID,’ Too
Children can suffer lingering symptoms from the disease, but researchers are still working to determine how frequently and how severely
Medicine
Mix-and-Match COVID Vaccines: The Case Is Growing, but Questions Remain
Studies suggest mixing vaccines provokes potent immune responses, but scientists want answers on real-world efficacy and rare side effects
Public Health
Why Are We Still Deep-Cleaning Surfaces for COVID?
The coronavirus behind the pandemic can linger on doorknobs and other surfaces, but these aren’t a major source of infection
Public Health
Mounting Evidence Suggests Coronavirus Is Airborne—but Health Advice Has Not Caught Up
After months of denying the importance of aerosol transmission of SARS-CoV-2, the World Health Organization is reconsidering its stance
Environment
Catastrophic Australian Bushfires Derail Research
But scientists see chance to control invasive species and study ecosystem disruption
