Some elaboration: Artificial Photosynthesis: the possibilities with a technology like this is vast. The real beauty of artificial photosynthesis lay in the implication that our technologies can redeem our environmental sins, in a way. 'Cut down all the trees! We're working on artificial wood, too!' Body Heat Batteries: perhaps the least consequential of the linked technologies due to the limited amount of heat humans produce, it still has the potential to change our daily lives. Imagine using these to help with the electricity bill, or as an extra charge for your ipad. I would assert that the precedent is important: utilizing that runoff energy, being more efficient. Graphene Capacitor I don't even know where to start with the things this technology could mean if made practical. Super simple, portable, orders of magnitude more efficient. It could mean the supremacy of the electric car, or immunity from blackouts.