Gate theatre, LondonRaw, current and fresh, this three-woman play about the unfair impact of global emissions leaves you fired up and outraged If we're judging on ambition alone, then Hot in Here has it all. Bicycle power? Yep. Springy trampolines that the audience can jump on? Yep. Even an energy-generating dancefloor? You bet. This is sustainable theatre and boy, does it feel exciting. Made by Pigfoot, the UK's fir…