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Preview: Natural Selections Podcast

Natural Selections

Conversations about the natural world with Dr. Curt Stager and Martha Foley, from member-supported North Country Public RadioThe natural world with Martha Foley and Dr. Curt Stager, Thursdays

Copyright: ℗ & © 2016, North Country Public Radio

Natural Selections: The Treeline

Thu, 20 Oct 2016 00:00:00 -0400

Martha Foley and Dr. Curt Stager talk about the timberline, the usually abrupt termination of forest growth above a certain altitude. While it results from a combination of unfavorable factors, the final straw seems to be the length of time free of hard frost. When the growing season is too short to overcome damage from the harsh climate, the trees die out.

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Natural Selections: Solar Weather

Thu, 13 Oct 2016 00:00:00 -0400

Solar weather does more than create light shows at polar latitudes. When the sun acts up, the effects can range from communications interference on earth to lethal doses of radiation for unprotected astronauts. Martha Foley and Dr. Curt Stager talk about heavenly weather.

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Sunfish - is that a pumpkinseed or a bluegill?

Thu, 06 Oct 2016 00:00:00 -0400

A common sight is fresh water shallows, sunfish provide an excellent opportunity to observe fish behavior. Dr. Curt Stager talks with Martha Foley about the two main varieties, the pumpkinseed and the bluegill. It may be hard to tell one from another, unless of course, you're a sunfish.

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Why were mammals so mammoth during the last Ice Age?

Thu, 29 Sep 2016 00:00:00 -0400

During the last Ice Age North America was home to many varieties of "super-sized" mammals, megafauna. Giant beaver, 'possums, bears, sloths and other creatures joined the more familiar wooly mammoth in the land bridge migration. Dr Curt Stager and Martha Foley look at the question, "Why so big?"

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Crab spiders can be good or bad for flowers, depending on the season

Thu, 22 Sep 2016 00:00:00 -0400

Crab spiders are small, camouflaged arachnids that drink nectar from flowers. They indirectly affect the pollination of flowers by eating different insects at different times of year. Martha Foley and Dr. Curt Stager discuss these "freeloaders."

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Mole diversity: starry noses and hairy tails

Thu, 15 Sep 2016 00:00:00 -0400

Martha Foley and Dr. Curt Stager talk more about three different types of moles that inhabit the region, and their habits. The Eastern American mole and the hairy-tailed mole prefer dryer soils and consume up to half their weight a day in worms and grubs. Their star-nosed cousin prefers a wetter environment.

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Moles: tiny sharks "swimming" under your lawn

Thu, 08 Sep 2016 00:00:00 -0400

Martha Foley and Dr. Curt Stager reveal some interesting facts about the insectivores that tear up your lawn every year - moles.The star-nosed mole, one of three species in the region, is semi-aquatic, but all varieties are lightning-fast foragers.

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Ginkgo trees, one species from the age of dinosaurs

Thu, 01 Sep 2016 00:00:00 -0400

Martha Foley and Dr Curt Stager talk about the ginkgo tree, an ancient species native to China. They do not spread naturally anymore, but during the time of the dinosaurs there were many types of ginkgo tree all over the world.

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Helpful fungi lurk inside some plants

Thu, 25 Aug 2016 00:00:00 -0400

Martha Foley and Dr Curt Stager discuss fungal lurkers - fungi that live inside plants. Fungal lurkers are a new discovery and scientists believe that this type of fungus helps the plant it lives on but may harm animals and people.

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What is a flame?

Thu, 18 Aug 2016 00:00:00 -0400

What is a flame? Why is it shaped like that? How does it keep going? Martha Foley and Dr. Curt Stager answer some burning questions about rapid oxidation.

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