Crowd-funding may provide cleantech entrepreneurs early-stage capital at a time when early-stage funding is drying up for cleantech.
Green energy has long aimed to overthrow fossil fuel's stranglehold on world power generation. But for now, Silicon Valley is taking green energy down a different path.
Despite a surge in interest, electric cars may remain niche products in the world's two largest auto markets. Advocates disagree.
The race for better batteries has spurred venture capitalists.
Sixty-nine percent of those polled in 21 countries say utility firms should be obliged to use more renewable resources, even if this would increase their monthly bills.