Lee Smolin speaks on quantum gravity, the nature of time, the role of ethics in science, and the importance of realism.
In the rural Indian province of Bihar, Husk Power Systems is converting leftover rice husks into biofuel. Now they're building mini-power plants around the country, and expanding into Tanzania.
Kelp, yeast, and sequestered methane gas are on the forefront of the move to create environmentally friendly clothing
A new drug-resistant malaria strain is spreading in South-East Asia. Farmers may be using fewer anti-biotics. Engineers are studying national disasters.