Chronicle of Higher Education: Ok, so maybe trace amounts of CO2 *don't* actually kill moose

Wolves Teach Scientists Their Limitations - The Chronicle of Higher Education

The gray wolves of Michigan’s Isle Royale may soon go extinct. But before they do, they’re offering an important lesson for scientists: Have a little humility.
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But then, for the next 20 years, it all changed, with climate seeming to dominate the moose’s survival.

Today, the scientists are less certain of climate’s importance. Isle Royale sits at the southern end of the moose’s natural range, and so you might expect their numbers to dwindle in the face of global warming. Not far away, the moose population in northeastern Minnesota has plummeted by two-thirds over the past three years, a change many chalk up to climate change. But over roughly that same period, the Isle Royale moose have increased by 80 percent, to nearly 1,000 strong, Vucetich says.

“There’s an awful lot of calves on the island,” he says.