Michael Pollan believes we in the U.S. are due for a revolution in the way we eat. Hear Pollan talk about food scandals related to the way certain foods are processed and prepared.

A new comprehensive study of the world’s 5,487 known mammal species indicates that extinction threatens 25 percent of land mammals...

Biochemist Mike Goosey of Shell describes the search for non-food sources for the 'next generation' of biofuels and the development of processes to convert them to fuel.

Global warming could push ocean life in new directions, warns Jorge Sarmiento of Princeton University. Hear about Sarmiento's research on how small temperature changes could have a big impact on ocean biology.

Medical researchers want to keep astronauts' hearts healthy in space, so they looked to the sporting world to find the best excercise. Hear about why rowing is best.

NASA glaciologist Robert Bindschadler talks about what Earth's ice sheets can reveal about climate, past and future, in this 8-minute podcast.

A British student wonders how the energy issue will impact our planet. Yale professor and 'energy futurist' Arnulf Gruber responds, and talks about what kids can do to help.

Sally Collins of the U.S. Forest Service says that plans to manage American forests sometimes have to change fast. Hear Collins talk about forest fires, climate change, and other issues facing today's forests.

Imagine sinking your teeth into a nice juicy burger...grown in a test tube. An expert explains why animal-free meat could be better for your health, and better for the environment. Listen to Jason Matheny of New Harvest, a research organization in Baltimore.

In the future, an elite class might be able to enhance their physical bodies and their senses. Rosalyn Berne of the University of Virginia talks about how nanotechnology might redefine what it means to be human. Read more about a nano-enabled future.