The Magazine of The Sierra Club
New Maps Show How Groundwater Affects Lakes and Rivers
100 years of pumping has reduced stream flows by 50 percent in some areas
science
Does the Mass Rearing of Butterflies Hurt More Than Help?
An excerpt from Jodi Helmer's new book, "Protecting Pollinators"
Searching for the Bathurst Caribou Herd
Two kayakers, Arctic tundra, and thousands of missing caribou
This Year’s Gulf Dead Zone Forecast to Be One of the Biggest
Floods, spring rains flush millions of tons of fertilizers down the Mississippi River
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science
Fluorescent Evergreen Glow Tells When Trees Are Taking Up Carbon
Researchers are learning how to interpret the faint light given off by the trees
These Scientists Did More Than Tell Us We Were Doomed
The authors of the IPBES report also gave us a road map out
Is Sterilization the Answer to Too Many Urban Deer?
Many are dubious, but the numbers add up
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science
The Intricate Webs That Keep Us Alive
A CT scan of a pigeon reveals the phenomenal complexity within
An Immodest Proposal: Parks Without People
What if we were to create nature preserves that were strictly for science?
In this story:
science
“Ozone Hole” Shows That We Avoided Planetary Disaster Before
The PBS documentary chronicles our response to the other climate catastrophe
