Part of the nonfiction Orca Timeline series for middle-grade readers, this illustrated book examines the past, present and future of cities around the world.|Imagine a city that's both a great place to live and good for the planet. Today, about four billion people—more than half the world’s population—live in cities. Cities: How Humans Live Together travels through time to see how we can design a more sustainable, welcoming city for everyone, today and tomorrow.
關鍵字詞： travel | maps | migration | modes of transportation | exploration | expedition | GPS | brain cells | satellites | navigation