Join maverick inventor Steve Mushin as he tackles climate change with an avalanche of mind-bending and scientifically plausible inventions to rewild cities and save the planet. Jump into his brain as he designs habitat-printing robot birds and water-filtering sewer submarines, calculates how far compost cannons can blast seed bombs (over half a mile), brainstorms biomaterials with scientists and engineers, studies ecosystems, and develops a deadly serious plan for cities of the future. Ultrawild is a tour de force of extreme problem-solving for kids and teens (and anyone else) who love big ideas.