Hydrogen fuel cells could someday meet a host of industrial energy needs, but it’s difficult and dirty to produce hydrogen using current methods. A new type of microbial fuel cell can power itself and produce a renewable supply of hydrogen, according to researchers at Penn State University. The system uses some seawater, some freshwater and bacteria.
A portable dialysis machine could liberate millions
By Jason Daley
Posted 07.18.2008 at 3:22 pm 5 Comments
For the 1.3 million people who suffer renal failure each year, kidney dialysis is a major undertaking. The lengthy out-patient process requires near-daily trips to the doctor’s office to be hooked up for hours to a massive machine; making it difficult to hold a job or have a normal social life. But Victor Gura of UCLA’s Geffen School of medicine has patented and tested the holy grail of nephrology: a portable, wearable dialysis machine.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.