Pulse of the Planet Podcast with Jim Metzner | Science | Nature | Environment | Technology

Up close with one of the rarest bird populations in North America. 

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When the weather's been cold and the Hudson River freezes over, that's when ice boats may be sailing on the river.

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Australia is home to about one tenth of the world's living bird species. Here's a sampling of a few of them - headphones on!

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Headphones on for a sound portrait of a cloud forest.

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It's sugaring time in the northeast woods of the US.

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For bears in hibernation, giving birth and nursing newborns is a slumberous activity.

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Bears have unique mechanisms for self-preservation during their months of hibernation.

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Grizzly bear tracking usually involves splitting a few hairs.

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Are Grizzly bears returning to the mountains of Montana?

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Through trickery and ingenuity, ravens are surviving the winter in Alaska

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