Scott Dulchavsky developed a technique to train space crews to diagnose astronauts' injuries in a matter of seconds.

Biofuels could be a significant contributor to reducing future carbon dioxide emissions, says biochemist Mike Goosey of Shell's Thornton Research and Technology Center in the UK.

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.

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.

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.

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.

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.

Bartlett says the most important thing we are ignoring is the simple mathematical principle of exponential growth. Find videos about it here.

As NASA prepares to return to the moon by the year 2020, a scientist is studying a space hazard - lunar dust.