An experiment to preserve the western swamp tortoise is the latest flash point in a debate over how far humans should go to protect nature as the world warms.
Against long odds and initially strong opposition, a pristine marine preserve in the Philippines has thrived for decades under the care of local fishermen. Warming waters threaten the achievement.
A new paper suggests that the combination of the virus and anesthesia plunges the brain into a prolonged state of quiet — like a freshwater turtle in winter.