One of my top audiobook listens for 2021. Gates identifies the Five Grand Challenges of climate change as manufacturing (31%), electricity (27%), agriculture (19%), transportation (16%), and buildings (7%). Since there’s no single solution for any of these sectors, Gates proposes we speed up the cycle of innovation and attract a mix of private and public investment that is more risk tolerant than we’re used to seeing in order to reach net zero emissions by 2050.