How Accurate Are Rapid COVID Tests?

Vaccines

What the U.S. Can Learn from Brazil’s Successful COVID Vaccination Campaign

Despite similar leadership at the start of the pandemic, Brazilians are more trusting of government and view vaccination as a necessity and a right

Adriana de Souza e Silva and Claudio Araujo | Opinion

Conservation

The Scientists Fighting for Parasite Conservation

Parasites play an outsize role in balancing ecosystems, and some species may be in danger

Rachel Nuwer

Health Care

What Genetics Can—and Cannot—Reveal about an Individual’s COVID Risk

Genome-wide association studies can sleuth out genetic markers that raise or lower COVID risk, but they miss social factors

Joanna Thompson

Consciousness

We Shouldn’t Try to Make Conscious Software—Until We Should

Eventually, the most ethical option might be to divert all resources toward building very happy machines

Jim Davies | Opinion

Public Health

The Urgent Need to Improve Health Equity

A special package highlights problems and solutions

Lauren Gravitz