This is useful, she says, for purposes of stabilizing the climate, controlling floods, purifiying drinking water, regulating water flow, supplying bees and other pollinators that supply 20% of our food.
So far, the city council has started building public toilets, supplying piped water to marketplaces and fixing up some of the roads, employing up to 800 casual labourers at a time.
Many believe that new technologies will need to be developed to deal with the extended periods of radiation such a trip would involve and to cope with supplying food and water for the crew.