This activity explores images of tree growth in the Serengeti over time, which serve as a phenomenon for learning about and modeling species interactions in ecosystems.
In this phenomenon-driven activity, students investigate how cells are signaled to make melanin and explain how mutations in melanin pathway proteins affect the coat color of various organisms.
Cell Biology
Genetics
Lessons
High School — General
High School — AP/IB
College
Coffee for Water
Release Date
Duration 00:27:51
Deforestation on Mozambique’s Mount Gorongosa threatens the watershed of Gorongosa National Park. Park experts and local farmers are planting coffee to restore the forest.
The Beautiful Undammed
Release Date
Duration 00:27:51
After a dam removal on Washington’s Elwha River, scientists are chronicling a story of ecological rebirth. Recovering salmon populations are transferring critical nutrients from the ocean into the forests, enriching the entire ecosystem.
Woodpecker Wars
Release Date
Duration 00:27:59
Scientists, soldiers, and landowners collaborate to save the endangered red-cockaded woodpecker at a North Carolina army base.