First, discussing Bill McDonough's vision of a world without waste,
Cradle to Cradle, in McDonough’s words, “does not just reduce waste, it eliminates the concept of waste,” stipulating that products be manufactured in new ways that will allow them to be reduced to their essential technical or biological elements in order to be re-used. Nature’s cycles provide the model.and second, an introduction to the new California Academy of Sciences Building in San Francisco, the greenest museum ever.
Beneath the roof, a rectangle of transparent walls would contain the museum’s traditional exhibitions: a rain forest (enclosed in a glass dome), a theater for viewing the cosmos (in a sphere that looks like it’s made of eggshell), a coral reef, a swamp, a habitat for penguins, and an exhibition on climate change and the earth’s future. Piano envisioned a profound connection between the building and the park: a facility in a pavilion that would be visually and functionally linked to its environment. He also proposed sustainable construction, which would use innovative technology to create the greenest museum ever built.