Instructional Video
PBS

Pbs Nova: Science Now: Mass Extinction

9th - 10th
A video narrated by Neil deGrasse Tyson that explores what caused the Permian extinction, the mother of all extinctions, 250 million years ago? [13:14]
Instructional Video
PBS

Pbs Learning Media: Desert Biome

9th - 10th
This video segment from NOVA: "A Desert Place" describes the physical characteristics and organisms that define the desert biome, and how living things adapt to this environment. [4:58] Includes background reading material and discussion...
Instructional Video
PBS

Pbs: Nova Labs: Growing Appetites, Limited Resources

9th - 10th
Humans' access to energy resources has often meant the difference between illness and health, poverty and wealth, and illiteracy and education. Learn more with this short overview. A transcript is provided as well. [2:21]