Planet of the Insects

How many species are there in the world? And what, exactly, are they? This visual depiction of the variety of life just might surprise you.

Elusive Efficiency

Increasing efficiency is one of the cheapest and most readily available ways to reduce fossil fuel use. Why don’t we do more?
Related: Supersize It!

Water Tight

As demand for water grows and supplies shift, companies and consumers alike are taking a critical look at their water footprints.

In Focus

Ocean acidification—the decline in pH caused by absorption of carbon dioxide from the atmosphere— threatens coral reefs around the world.

Noteworthy

“A” for sustainability … student entrepreneurs … 20% by 2030 … photo finish … liquid sun … better biomass … new discoverers

Snapshot:

Going with the Flow

Fotis Sotiropoulos is fascinated by the behavior of fluids. Read how his research is helping to improve wind and water power generation.

Connections: Pure Genius

More than 1 billion people worldwide lack access to safe water. This nonprofit is doing something about it— for 7 cents a liter.

Standout:
Into the Wild Blue Under

Oceanographer Sylvia Earle has spent decades beneath the waves. Here’s her take on why we should care about—and for—our planet’s blue heart.

Viewpoints: Alien-ated

Are nonnative species a threat to biodiversity that must be fought at all costs? Or is the battle against invasives sometimes misguided?

Scientist's Soapbox: Feed the World, Save the Earth

Providing people with enough food is a moral obligation. So is ensuring that future generations have a livable planet. How can we do both?
Related: Revolution by Natural Affection