Earth’s ecosystems
Slow Arctic Freeze Raises Risk of Polar Bear Extinction, Say Scientists
Record absence of ice after freak warm spells denies pregnant bears birthing dens and triggers ‘extirpation event’ warning. A record slow freeze of many regions of the Arctic this winter is making it harder for pregnant polar bears to find birthing dens.…
New Global Database Will Help Scientists Track Role of Lakes in Earth’s Ecology
The total shoreline of the world’s lakes is more than four times longer than the global ocean coastline. And if all the water in those lakes were spread over the Earth’s landmass, it would form a layer some four feet…