dr debery is looking under water and taking a lesson from fish. >> it occurs to us it's a different solution. so as each one flaps its heel it's creating a choppy weight. they swim together, but they arrange themselves in a way that they are able to be more efficient in the youp than they are by themselves. that's what we wanted to get after, a design for a wind farm where the turbines were more effective in the youp than they are by themselves. >> believe it or not this is a research lab. here in the dusty hot and windy analogue valley that scientists are able to test the latest hypothesis about the best way to harness energy, from all the wind. is to this windy out here? >> this is not a windy day. >> cal terk post doc trait scholar spends much of his time out here studying vertical wind tur bins. i see two wind turbines behind one. >> the smaller is a 1 kiloway. the bigger is a 2.5 kilowatt turbine. the smaller one is more beneficial for smaller applications, the bigger one produces more power but needs more wind. so it's a bit of a trade off what wind you have, how many turbines you want