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For billions of years, rivers connected continents to the sea. Then we came along.

Forgetting and misremembering are the building blocks of creativity and imagination.

One question for Nils Köbis, a social psychologist at the Max Planck Institute for Human Development.

Stone buildings in northern India reveal secrets of old structures that could save lives.

More stimulating environments for captive fish could improve scientific research.

What the COVID-19 pandemic portends.

This essential substance has a history—and future—that’s far from clear.

One question for Michèle Belot, an economist at Cornell University.

Wetlands store a lot of carbon—but turning that into a business isn’t easy.

We can learn about the universe without conquering it.

How I came to feel at home in what some call the last wilderness on Earth—Antarctica.