Takeamind-blowingjourneythroughhumanhistory,toldthroughsixiconicobjectsthatmodernpeopletakeforgranted,andseehowscience,invention,andtechnologybuiltononeanothertochangeeverything.

<p>Professor Stephen Hawking thinks the human species will have to populate a new planet within 100 years if it is to survive. With climate change, pollution, deforestation, pandemics and population growth, our own planet is becoming increasingly precarious.                …