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Polar bears call the icy tundra of the world's northern regions home. But you don't have to freeze your butt off on a frosty trip to the Arctic for a glimpse of these mighty mammals.You can get a day-in-the-life view through the polar bear webcam.

The cam is online thanks to Polar Bear International, which dedicates its site to educating the public about polar bears and the challenges they face due to global warming. PBI partnered with National Geographic, the Tundra Buggy Adventure, and WildlifeHD to set up a webcam to watch the bears' annual gathering at Gordon Point near Churchill, Manitoba.

This year's cam will be live through November 28. On any given day you could witness the bears enduring snowstorms, sleeping, huddling their cubs, or enjoying a good ol' play fight to pass the time until the ice freezes and they can begin their hunt for food.

Find the original review for this site—and other highlights from the earth-friendly side of the Internet—on Yahoo! Green.

Making its debut as a "first in bovine history," MooTube takes us where few webcams have dared to tread: into the pasture for a daily, cow's-eye view of the world. Harnessing the cutting-edge technologies of an "onboard unit" and a mobile recording station, MooTube documents the participants as they nose through the field, eating grass, chewing cud, and generally taking life in. If you become a regular viewer, you'll meet and grow to love such MooTube stars as Silent H Miss Swbyps, The Colonel's Encore, and the calf Internet Phil. Know that you will witness a lot of grass-munching and meandering, as that's what cows do best. Occasionally, an animal may wander out of range and a cam will go staticky. If that happens, don't panic. The beast will surely return, and in the meantime you can browse the cow-cam archive and its amusing blog, "From the Pasture."

We admit, there are days we wish we'd followed our nine-year-old aspirations and wandered off to Africa to study the animals. This is one of them. Pete's Pond was created by Pete Le Roux, the general manager of Botswana's Mashatu Game Reserve. Because poachers frequented the nearby Limpopo River, Pete decided to help repopulate the reserve by digging a pond to provide an alternative watering source. And with some technical help from a webcam, you can see what kind of crowd now hangs out at Pete's Pond. Get sighting updates, or just check out what the elephant and leopard researchers are spending their time on. And if you can't tell a steenbok from an eland or an African civet from a large-spotted genet, the animal gallery can help you out. If you happen to catch the pond at a slow moment, you can relive busier times with video highlights. But in only one hour, we saw a herd of elephants, a sprinkling of zebras, a variety of birds, and one lone warthog. We were working, we swear!