all have one thing in common they float on special concrete rafts fastened on 2 pillars the swimming foundation needs to be able to carry several 100 tons i'm a spare 4 be balanced precisely here at harvard is one of the project architects because you have to go every thing that you put on the boat how heavy it will be because if you put in too much. weight it will be too low and the water starts to come in so that's why we make a lot of calculations front how heavy the boat will be. 20 different architects were involved in the project the houses were built on land and then brought to the dock by boat sustainability it's very important to be inhabitants means clean ship . we wanted to achieve is to show that you can live on water with very sustainable houses and in a sustainable way in the sense that we as a community so we had 3. levels of what we wanted to show. to the world actually. sustainable and east. friendly materials were used for the housing the facade of peda reich's time is made of cool we had some discussions with a whole group and we had to help from different. pfizer's materials

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swimming pools would close. schools and theaters would close. it was on everybody's minds, and parents just pitched in, kids pitched in, the march of dimes. the national foundation for infantile paralysis ran a fund-raising program to help fund research on polio and treatment and on a vaccine. when the vaccine came out, this was the success of the people of this country. this wasn't government funded. it was the funding from the people. >> i'm guessing that when you heard of the success in the very limited vaccine trial thus far in coronavirus, you had occasion today to think of these early patients with some measure of empathy and sympathy. you've been there. >> well, it's wonderful to have encouraging news. but i have to say that the process to develop that first polio vaccine by my father and his team at the university of pittsburgh was a long and very carefully undertaken process. at this point there's such a huge need. this disease, the coronavirus infection came upon us suddenly. it's been a total shock to our consciousness. there's a great need to have a vaccine, but there's also a great need to proceed carefully. vaccines are wonderful discoveries, inven