A Floating Artificial Reef Would Let You Walk Down Into the Ocean Deep

This month, a grim study in the journal Science reported what we've feared for decades: That the ocean may "be sitting on a precipice of a major extinction event," in the words of one author. There's a colossal amount of work to be done if we want to turn it around--including reclaiming habitats, which is the goal of this ambitious proposal by three young architects.