Topic: Invasive Species
If a plant looks attractive, humans might help spread its species across the planet. This spread can sometimes have disastrous consequences. Learn the story of one pretty, destructive plant — today on Earth and Sky.
Related PLT Activities
- PreK-8 Guide
- The Changing Forest: Forest Ecology (9-12)
Rocky Mountain elk are highly adaptive animals. During the cold winter months, they move to where their food is — valleys of blue-tinged bunchgrass — but weeds are moving in. Find out how the elk are being protected on today’s edition of Earth and Sky.
Related PLT Activities
- PreK-8 Guide
- The Changing Forest: Forest Ecology (9-12)
Ash trees are a common hardwood in North America. They’re often planted in cities because they can handle the stress and pollution. But there’s a new threat to ash trees — which we talk about on today’s Earth and Sky.
Related PLT Activities
- PreK-8 Guide
- The Changing Forest: Forest Ecology (9-12)
Scientists were surprised to find bare soil on forest floors once covered with decaying leaves and plants. The culprit? A creature you probably thought was a garden’s best friend. Earthworms — coming up on Earth and Sky.
Related PLT Activities
- PreK-8 Guide
- The Changing Forest: Forest Ecology (9-12)
More than a century ago, California settlers put trout in buckets of water and hauled them upslope, to dump them in mountain lakes. Today the fishing is good, but the frogs are in trouble. Fish and frogs — on today’s Earth and Sky.
Related PLT Activities
- PreK-8 Guide
About E&S Teachers Center
PROJECT LEARNING TREE® is an award winning Environmental Education program of the American Forest Foundation.
Enhance learning in your classroom with correlated PLT lessons. Hundreds of correlations have been developed combining PLT's award winning PreK-12 Environmental Education curriculum and Earth & Sky's radio series.
Browse the topics to the right to view the radio shows and activity correlations.
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