perhaps most importantly climate change the least we should ask from the bankers i'm joined now by janet redmond co-director for the sustainable energy in economy network at the institute for policy studies and karen ornstein international policy analyst at friends of the earth janet karen welcome to show things so you guys are proposing something called a robin hood tax so what exactly is that janet you have a robin hood tax otherwise known as a financial transactions tax or financial speculation tax but the tiny tiny tax on each day of swaps stocks futures other forms of derivative financial instruments that's making it a little bit less lucrative to make those kinds of trades but raising a huge amount of money get us a tiny tiny tax so it hits the high frequency trades a lot but not general trades that you and i would be doing you mention those high frequency traders that some huge percentage of trades right now are done by robots and we solve the kind of dangerous effects of that back in two thousand and ten when there was that flash crash in one day. so aside from curbing bad behavior like