Adirondack lakes recover from acid rain, but with an altered ecosystem
Natural Selections
by Natural Selections
2y ago
(Sep 10, 2020) The success of the Clean Air Act in reducing acid deposition in Adirondack lakes is an under-reported good news story. Many lakes once devoid of life can now support healthy fish populations and other aquatic life. But as Curt Stager discusses with Martha Foley, the life that returns to recolonize the water is not the same as what was lost. Sediment cores show that the original algae and plankton varieties that form the base of the food chain and were unchanged for hundreds of years are being replaced by different varieties. A balance has been restored, but it's a new balance, t ..read more
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Is that a plant, or what?
Natural Selections
by Natural Selections
2y ago
(Sep 17, 2020) Mushrooms grow out of the soil like plants, but are fungi. Lichens may look leafy, but they are symbiotic colonies of fungi and algae. Seaweed looks like a plant, but is an algae colony. And Indian Pipe looks like a fungi, but is a plant. Martha Foley and Dr. Curt Stager discuss the ins and outs of botany ..read more
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Mosquitoes are equal opportunity bloodsuckers
Natural Selections
by Natural Selections
2y ago
(Aug 6, 2020) We continue a conversation about that bane of sunbathers, the mosquito. But it's not just our blood the female of the species lusts after. Other insects, birds, mammals - even reptiles - can be the target of her search for protein rich foods to help her create and feed the next generation ..read more
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Where did all the insects go?
Natural Selections
by Natural Selections
2y ago
(Aug 13, 2020) Curt Stager reports on a long-term study of flying insects in Germany that records an astounding 76% drop in the total biomass of flying insects entering their traps over the last 30 years. This is not a decline as happens in a single species, but appears to affect the whole spectrum of species. Martha Foley wonders if this could explain the decline in insect-eating birds that appear around her house, or the steep decline in bug spats Stager observes on his car compared to decades ago. Disturbing news from long-term study and anecdotal observations ..read more
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Natural Selections: How rocks recycle
Natural Selections
by Natural Selections
2y ago
(Apr 29, 2021 ..read more
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Every rock tells a story
Natural Selections
by Natural Selections
2y ago
(Apr 15, 2021) Curt Stager has his students start the semester by picking out a "pet rock." At the end of term, they have to tell the story of that rock - what it is, what it's made of, and what happened to shape it it over the ages ..read more
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Natural Selections: Deer up close and personal
Natural Selections
by Natural Selections
2y ago
(Apr 1, 2021 ..read more
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The science behind maple syrup
Natural Selections
by Natural Selections
2y ago
(Mar 18, 2021) You can get the sugar out of a lot of trees, but there's something special about the sugar maple. Its trunk is highly efficient at storing and moving sap. That's in part because the sap is stored throughout the trunk, rather then down in the roots, as with most trees in winter. Martha Foley and Curt Stager look at that other "sweet science," the one behind our favorite breakfast condiment ..read more
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Glitches? Could be gremlins, could be cosmic rays
Natural Selections
by Natural Selections
2y ago
(Mar 4, 2021) Martha Foley and Dr. Curt Stager discuss cosmic rays. While many people may think cosmic rays only affect astronauts or satellites - objects in space - computers and other electronic equipment on Earth can be affected, too ..read more
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Chewing underwater and the many feats of the magnificent muskrat
Natural Selections
by Natural Selections
2y ago
(Feb 18, 2021 ..read more
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