Stories by Chelsea Wald

The New Economy of Excrement

Entrepreneurs are finding profits turning human waste into fertilizer, fuel and even food

Speedy Fish's Swordlike Bill Serves as Multifunctional Killing Tool

High-speed video now reveals the bill as a specialized weapon that can exert great power or nudge prey gently

Migrating Birds Use Precise Flight Formations to Maximize Energy Efficiency

Birds coordinate the timing of their wing flaps to best take advantage of the 'flying V' formation

Poachers Gun Down Iconic Ibis

Goja, named by Jane Goodall and the poster bird for a project to save northern bald ibises from extinction, was killed by illegal hunters

Ode to the lowly tussock

Editor's Note: Vienna, Austria-based science writer Chelsea Wald is taking part in a two-week Marine Biological Laboratory journalism fellowship at Toolik Field Station, an environmental research post inside the Arctic Circle...

Adventures in Alaskan science: How I escaped from a thermokarst

Alaskan science on the solstice: Doing research where the sun never sets

Science, pipelines and bears: A reporter goes to Alaska's Toolik Field Station

Editor's Note: Vienna, Austria-based science writer Chelsea Wald is taking part in a two-week Marine Biological Laboratory journalism fellowship at Toolik Field Station, an environmental research post inside the Arctic circle...