Contentious debates about "peak oil" aside, imagining how the world looks post oil is increasingly easy as alternatives to fossil fuel develop rapidly.
By 2022, those living in poverty will be a minority for the first time, as the global middle class – particularly from BRIC (Brazil, Russia, India, China) nations – surges. Does new affluence signal shifting global power?
From the computer that beats humans on "Jeopardy!" to cellphone apps for African pick-and-hoe farmers, to satellites that spy on human rights abusers.
A timeless mission. Now, more than ever.
An occasional series on two families who reached out.
A school year in the life of a new American.