The Magazine of The Sierra Club
When Tiger Sharks Show Up to Hunt Seabirds, Other Sharks Steer Clear
Smaller Galapágos and gray reef sharks change their behavior, likely to reduce competition or out of fear
Lands & Waters
Zoologists Are Still Working Out Who’s Biting Us
Mosquitoes and other bloodsuckers play an important role. It's time we learned their names.
Saving One of America’s Most Imperiled Birds
The Florida grasshopper sparrow is rebounding thanks to the work of these conservationists
This Species of Pine Tree Is Working to Save Itself From Blister Rust
Conservationists are helping support a tree known as “the water tower of the high mountain”
This Easy Solution Could Prevent Whale Deaths
New on-demand fishing gear reduces harmful entanglements
Loons Losing Out
A common piece of fishing gear is threatening one of America’s most beloved bird species
Five Stories From 2025 Remind Us That Joy and Wonder Still Matter
Tired of doomscrolling and bad news? Here are stories that will leave you feeling inspired, in awe, or just plain happy.
Protecting Threatened and Endangered Species Could Get a Lot Harder
Proposed changes to Endangered Species Act regulations would defang our best defense against extinctions
From Growl-Rumble-Whoops to Moan-Whines: Hawaiian Monk Seals Have a Vocal Repertoire Full of Surprises
The endangered species is the only pinniped known to string together vocalizations with no break
