Why has the flow of big, world-changing ideas slowed down? A provocative look at what happens next at the frontiers of human knowledge. The history of humanity

A compelling account of the relentless trajectory of humankind across time and geography.

This compelling account charts the relentless trajectory of humankind, and its changing survival and disease patterns, across place and time from when our ancie

"Rare Earth Frontiers is a timely text. As Klinger notes, rare earths are neither rare nor technically earths, but they are still widely believed to be both. Al