Last decade’s clean-tech gold rush ended in disaster, wiping out billions in investments and scaring venture capitalists away for years.

But a new investment boom is building again, this time around a broader set of climate-related technologies. Funding has soared more than 3,750% since 2013, according to a PwC report this fall, as numerous climate-focused venture firms emerge and established players return to the field (including some that got scorched the last time). Investments are poised to rise further as market, policy, and technological forces align to make venture capitalists and entrepreneurs more confident. READ MORE