The Delicate Balance, Part 1: Economics vs. Environmentalism OR What's a Tree Worth?
The impact of the corporate mind-set on the environment. Modern culture tends to view the world through an economic value filter, ignoring the larger value of natural resources, such as trees, to the planet's ecosystems.
How Each of Us Affects the Environment (Part Two)
Scientist and climate change expert Michael Oppenheimer talks about how the everyday choices we make as individuals take a toll on the environment, and discusses how we can make better choices (Part 2)
Prime Numbers: Method of Finding Prime Factors, A
This clip states one of the most basic laws of arithmetic: every number has one and only one prime factorization. The clip also explains how to determine that factorization, using a process known as branching. The clip also states that prime factori...
Trees and Other Critical Resources
Former Sierra Club president David Brower talks about the value of critical resources, including trees, soil, water and rapidly disappearing species.