April 2021 Issue

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From the Editor

Why we need to give air pollution the sustained attention it deserves

It’s a killer of millions, and it’s worst where the most vulnerable people live. But air pollution can be cut drastically when we demand regulation and enforcement.

Proof

The timeless beauty of a mathematician’s chalkboard

Mathematicians continue to calculate, solve, and create on chalkboards, even in the digital age. A photographer captures samples of their work.

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Landownership has a complicated legacy for Black Americans

Parakeet mobs, octopus moves, and other curious phenomena

Can virtual meetings affect your well-being?

A veteran climber reconsiders his view of the ‘Everest selfie’

This beetle’s misplaced affection has deadly consequences

As conflicts roil nations, a pause for tea gives peace a chance

This U.S. national park above the Arctic Circle is an adventurer’s dream

This ancient city is the perfume capital of India

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April 2021 Issue

Air pollution kills millions every year

What the Clean Air Act did for Los Angeles—and the country

See how polluted air attacks our bodies

An urgent question hangs over wildfires: What’s in that smoke?

These maps show the devastating paths of wildfires

How America’s most endangered cat could help save Florida

Hundreds of new insects discovered in the Amazon’s canopy

How pain and passion shaped the genius of Aretha Franklin

The songs that defined Aretha Franklin’s record-breaking career

From the editor