苔原的虚拟之旅
Every Fall, Churchill’s polar bears gather along the shores of Hudson Bay to wait for the ice to form so they can return to their seal-hunting grounds. During that time, they’re in a state known as walking hibernation. But freeze-ups are coming later each year—and melt-offs sooner—straining the limits of their fat reserves. That’s why this population is considered the most endangered. It’s up to us to take action to help them.