Waste Water + Bacteria = Clean Energy – ScienceNOW

“For the first time, researchers have sustainably produced hydrogen gas, a potential source of clean energy, using only water and bacteria. The challenge now, scientists say, is to scale up the process to provide large amounts of hydrogen for various purposes, such as fueling vehicles or small generators.” I keep thinking of how to extract […]

Device uses leaf technology to turn sunlight into power – The Boston Globe

“The thumb-size black strip looks like a thin magnet. But in reality, it is an artificial leaf, made of silicon and capable of using sunlight to split water into hydrogen and oxygen that can be fed into fuel cells to make power. “You drop it in a glass of water and you walk outside and […]

Chemically evolved bacteria

“European scientists have created an Escherichia coli strain with a separate genome using chlorinated DNA. The genome should be unable to transfer back into unmodified bacteria, leading to what the researchers call a ‘genetic firewall’.” First arsenic, now chlorine. In my grad school days, we were studying DNA-protein interactions by modifying specific atoms on the […]

anti-mega at Interesting 2011

“The nature of the day was participatory, so instead of doing a presentation on stage (as I did at Interesting 2007), this time I attempted to get all 200ish people in the room trying, making and tasting things. By-the-by, this is also one of the hardest things I’ve done in years – scaling to 200 […]

New battery design could give electric vehicles a jolt – MIT News Office

“The new semi-solid flow batteries pioneered by Chiang and colleagues overcome this limitation, providing a 10-fold improvement in energy density over present liquid flow-batteries, and lower-cost manufacturing than conventional lithium-ion batteries. Because the material has such a high energy density, it does not need to be pumped rapidly to deliver its power. “It kind of […]