News

Earth

The worst wildfires can send smoke high enough to affect the ozone layer

Pyrocumulonimbus clouds can send soot and other damaging particles 23 kilometers into the air

Climate

Mercury levels in fish are rising despite reduced emissions

Climate change and overfishing can increase how much mercury accumulates in fish, counteracting efforts to reduce human-caused emissions.

Astronomy

Giant, active galaxies from the early universe may have finally been found

Overlooked galaxies from when the universe was younger than 2 billion years old could be the ancestors of other ancient and modern monster galaxies.

Health & Medicine

Racist words and acts, like the El Paso shooting, harm children’s health

Racism can take a lifelong toll on children’s and adolescents’ health.