Items by J. Madeleine Nash
In California's White Mountains, scientists ponder the fate of beardtongues, bristlecone pines and butterflies in a rapidly warming world.
Rare and tiny spring-dwelling creatures are threatened by everything from invasive species to Las Vegas' plan to pump groundwater from a rural part of Nevada.
Ecological consultant Stuart Weiss believes that carefully managed grazing could help save a rare California butterfly from extinction.
Paleo-oceanographer James Zachos points to evidence of the last time climate change acidified the oceans, some 55 million years ago.
- The taxpayer money that fuels federal land transfer demands
- Latest: California fracking companies inject protected aquifers with wastewater
- Obama's preemptive strike to reform Endangered Species Act
- Sightseeing at an open pit mine in Arizona copper country
- Wyoming trespass law is the latest in grazing battle