or people among us who want to terraform mars. that's a cool thought, turn mars into an oasis, we can just all leather. if you have the power to into new earth, you can control sea levels on earth, like it's a trivial homework set. homework problem for school. so i try not to run away from problems. i see them as interesting challenges to salt. and so why not view this as an occasion to solve the problem of the melting ice caps rather than to distract yourself with what apartment to buy to avoid it? [applause] >> i just had a question. you cited economic incentives as one of the main drivers of future exploration in space. i was just wondering if you could see corporations being at the forefront of space exploration as opposed to governments of the world? >> that will never happen ever. [laughter] another delusional point that i make in the book. let corporations do, even newt gingrich while he is pandering on as politicians be rigidly, to the space community of florida where you find kennedy space center. he said let's get corpora