September 09, 2002

Is Climate Change Too Uncertain for Policy?

Guest: Stephen Schneider.

According to the National Academy of Sciences, the surface temperature of the Earth has risen by about a degree in the last 100 years. Many scientists argue that most of the warming over the last 50 years is due to human activity. Others say we don't have enough data to draw that conclusion. This morning on Focus, we're joined by Stanford biologist Stephen Schneider to explore the question of whether climate change is too uncertain for policy.

August 29, 2002

Linked: The New Science of Networks

Guest: Albert-László Barabasi.

In the age of the Internet, networks are a concept that surrounds us—we are all connected to other things and people in numerous ways. Today on Focus, we're joined by physicist Albert-László Barabasi to discuss the science of networks, the laws that they follow, and how they permeate and appear in just about every field and part of life one could imagine.

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