Wind energy mines Zcash to support climate research
This is a cool! 'Harvest' project uses a 700W wind turbine to power a PC mining criptocurrency (specifically, Zcash) that directly funds climate change research. In other words: the more the symptoms of climate change manifest themselves, the more money goes toward fighting that change.
More info, here: https://www.engadget.com/2017/09/16/wind-energy-mines-digital-cash-to-back-climate-research