These are important recent developments for the future of energy in our world.
Mutant Algae Is Hydrogen Factory
MIT labs ultracapacitor article 1
MIT labs ultracapacitor related article 2
The MIT lab thinks that they can increase the energy density of ultracapacitors up to 60Wh/kg by using the nano-tubes and at the same time achieve a power density greater than 100,000W/kg (3 times that of batteries). This post shows some Ragone plots of energy density vs power density of capacitors, batteries and fuel cells.