What makes food ‘local’?

More people are choosing what to eat based on where it was grown, made or created. An anthropologist looks at the myriad ways we link food to place — and whether it really could make a difference.

Stephanie Parker • knowable
Feb. 26, 2020 ~12 min

Out of Antarctica, churnings of climate change

The interplay of carbon dioxide, winds and Southern Ocean waters could be reaching an environmental tipping point

Anil Ananthaswamy • knowable
Feb. 25, 2020 ~22 min

The iron ocean

Through dust, not rust, the metal plays a complex, controversial role in Earth’s climate

Emily Underwood • knowable
Dec. 19, 2019 ~25 min

The human hand in fish evolution

Fishery practices that go for the big ones may be counterproductive when mostly the small survive

Tim Vernimmen • knowable
Dec. 9, 2019 ~12 min

An amphibious rescue mission

On the edge of extinction, rare frogs and toads need more than a little love to reproduce. High-tech help, from IVF to hormone therapy, may save them.

Stephanie Pain • knowable
Oct. 8, 2019 ~21 min

The next omics? Tracking a lifetime of exposures to better understand disease

Of the millions of substances people encounter daily, health researchers have focused on only a few hundred. Those in the emerging field of exposomics want to change that.

Lindzi Wessel • knowable
Sept. 19, 2019 ~17 min

From tiger scat to DNA to — hopefully — survival

Researchers dig out the elusive cats’ genetic material where they can, to guide efforts at conservation and diversity

Amber Dance • knowable
Sept. 17, 2019 ~13 min

On whose green Earth?

Are we supposed to take care of the planet or should it take care of us? Willis Jenkins explains how religion shapes the conflicting views over climate change and other environmental issues.

Stephanie Parker • knowable
Sept. 3, 2019 ~15 min

Predicting biological invaders

Complex mathematical tools are aiding the battle to identify invasive species before they get a foothold in the environment. But bureaucracy can blunt the techniques.

Leslie Nemo • knowable
Aug. 13, 2019 ~10 min

A world in a bottle of water

Revolutionary techniques using traces of environmental DNA are analyzing entire ecosystems “from microbes to whales”

Rodrigo Pérez Ortega • knowable
Aug. 2, 2019 ~14 min