this is lindy alton stanton who had some assets, time emission an important thing to mention that i'm running is, is a pure science mission. but the program is not about asteroid mining. it could help lay the groundwork for such missions in the future. crazy as it sounds, mining asteroids might not only be feasible, but also much more sustainable than mining on earth. and it actually turns out that the answers seems to be yes. andrea's height is a research here who has actually crunch the numbers. the estimates that the rocket fuel needed to go and bring back one kilogram of platinum from an asteroid would release 150 kilograms of c o 2 and to the earth's atmosphere. terrestrial mining would generate 40000 kilograms. so asteroid mining could be hundreds of times less polluting. essentially, the main reason is there's almost no other substance you can mine and which should generate step much. greenhouse gases outsourcing, mining to space would decrease pollution on earth. but there's some economic problem in terms of sustainability, it's when, in terms of economics, it's not profitable