With catalysts created by an MIT chemist, sunlight can turn water into hydrogen. If the process can scale up, it could make solar power a dominant source of energy.
NASA’s Dean Alhorn, lead engineer for the NanoSail-D satellite, demonstrates how the spacecraft will deploy its solar sail in space.
Jonathan Mapel, cofounder of Covalent Solar, based in Cambridge, MA, uses commonly available plastic sheets to illustrate how a new solar concentrator works. He then shows a prototype of the new solar concentrator, which features advanced dyes that make it highly efficient.
A new human-powered generator tries to capture walking energy.
A supersonic bullet is fired with a record-breaking 10 megajoules of muzzle energy.
A cheap polymer material increases the power output of methanol fuel cells by 50 percent.
A new lithium-ion battery from A123 Systems could help electric cars and hybrids come to dominate the roads.
A versatile new process for making biofuels could slash their cost.
A new technology could generate electricity from waves.
David Berry at Flagship Ventures is creating genetically engineered organisms that make biofuels.