Deserts
Life at the edge of dryness
Some parts of Chile’s Atacama Desert have not seen rain for centuries. Scientists go there to learn how dry a place can be and still hold life.
Places
Forests, oceans, skies — and the forces that shape them.
Natural phenomenon
The ocean’s own light
Rare on land, common in the sea: in parts of the deep ocean, most animals can make their own light.
Oceans
Cities built by animals
Coral reefs cover about 1% of the ocean but shelter at least a quarter of its life. Their builders depend on a partnership that heat can break.
Mountains
The mountains that are still rising
The Himalaya were born when India crashed into Asia, tens of millions of years ago. The collision has not stopped.
Natural phenomenon
A spark several times hotter than the Sun’s surface
Lightning heats the air to tens of thousands of degrees in a few thousandths of a second. Thunder is the sound of that air exploding outward.
Wetlands
The quiet giants of carbon storage
Bogs and fens cover about 3% of the land, yet they hold more carbon than all the world’s forests. Draining them lets it escape.
Oceans
Forests beneath the waves
Fast-growing and full of life: inside the underwater forests that reach from the seafloor towards the light.
Forests
Where the forest meets the tide
Trees that stand on stilts in salt water, flooded at least twice a day — and steady the coast.
Natural phenomenon
Why the night sky glows green
Not reflections, not clouds: auroras are light made high above us when particles from space meet our air.
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