Honestly? A major breakthrough in fusion, or to a lesser extent, any other clean energy. We’ve decarbonised a decent chunk of the world’s energy profile, but there’s a strong financial incentive that politicians are vulnerable to protecting oil and gas, slowing down further decarbonisation. Batteries and supercapacitors also could do the trick.

In theory yes, and in practice the US is planning on producing certain critical drugs locally, but most drugs will probably continue to be produced in India and China due to cost.