Birds of Spring, Habitat Preservation (start time: 3:08) It’s springtime, when many of us are woken up at the crack of dawn by a chorus of chickadees or other songbirds outside. To celebrate these emblems of spring, and World Migratory Bird Day (May 18), How On Earth’s Susan Moran interviews two bird/nature experts about the state of affairs for the North America bird population , including threats to their survival, efforts to preserve their habitats, and how we humans can get outside and appreciate the natural world while helping to give birds, insects and other wildlife a leg up. Terri Schulz is senior conservation ecologist at The Nature Conservancy Colorado, focusing on preserving habitats throughout Colorado. Dave Sutherland is a naturalist in Boulder who worked for many years as environmental education coordinator at the City of Boulder’s Open Space Mountain Parks. He leads frequent nature hikes.
Host/Show Producer: Susan Moran
Engineer: Jackie Sedley
Executive Producer/Contributor: Shelley Schlender
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Podcast: Play in new window | Download (Duration: 27:31 — 32.6MB)
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Of Bears & Humans (start time: 1:34) If you live 
Nature’s Songs and Cries (start time: 0:59) In this week’s show 
Conservation on the Edges (start time: 13:26) Charismatic predators like polar bears, grizzlies, and tigers, get lots of attention, and for good reason. But many lesser known species, particularly those living in extreme environments–including muskoxen, wild yaks, takins and saigas–are also important species. They have been the research focus of 
Healthy Planet+Healthy Humans? (start time: 14:46) 
This week’s How On Earth offers two features:
Fixing Food Waste (start time: 17:59) We’re all guilty of it: waste. Tossing out peaches, broccoli and other food that has gone bad in the fridge. Or leaving pasta on our plate untouched at an Italian bistro. More than one-third of all food that is produced in the United States is wasted – in the field, at restaurants, in our own kitchens. The conservation organization World Wildlife Fund recently published a report on the huge environmental and health impacts of food waste, and on what can be done to reduce waste, and ultimately preserve grasslands and other natural habitat. Monica McBride, manager of 
Nature means something different to everyone. It’s a towering old-growth redwood forest to some. Deep silent canyons to others. And urban community gardens to others. Defining what is “pristine nature” is even more dicey. Just ask conservation biologists trying to figure out the best ways to preserve ecosystems and their flora and fauna.
Tom McKinnon interviews Jeff Bisberg of 