Undercover Tourists Are Saving Sloths in Costa Rica

Why Mike Lee Is Waging War Against America’s Public Lands

How Pixar Got the Science Right in Hoppers

Advocating for Federal Policies that Connect Youth and Families to the Outdoors

March Badness 2026: Trump 2.0 is ‘One Shining Moment’ for Corporate Polluters

Sierra Club Testimony at the CalPERS Board Meeting in March 2026

A Winter With Less Snow Could Create Huge Problems for the West

When Indigenous Knowledge and Climate Science Meet, Good Things Happen

These Scientists Just Mapped Scorpion Hot Spots. Here’s Why You Should Care.

The Winds of Clean Energy Keep Blowing

The Solar Industry Has Been Bogged Down by Red Tape. Digital Tools Are Changing That.

Facing Apex Predators—and Fear—in the Name of Conservation

Crocodiles Know a Thing or Two About Solar

The Lookout

The Renewable Energy Train Has Left the Station