China faces a dilemma. It is home to 20 percent of the world’s population but only seven percent of the world’s water resources and nine percent of the world’s arable land. At the same time, a rising middle class is demanding more food. Over the last 30 years, China’s meat demand has quadrupled.

Is it possible to prepare for the unexpected? Could anyone have foreseen, for instance, a nuclear meltdown triggered by an earthquake-induced tsunami? Or a brutal band of transnational militants quickly capturing Iraq’s largest dam while attempting to establish a new Islamic caliphate? Perhaps not exactly, but that shouldn’t stop us from anticipating unlikely events, says Chad Briggs, a risk assessment expert and strategy director of consulting firm GlobalInt.

Rapid growth and environmental change are creating new challenges for urban areas around the world. By 2050, as many as 7 out of 10 people on Earth will live in cities, with the vast majority of growth occurring in today’s developing countries. [Video Below]

According to NASA and a team of scientists from the University of California, significant portions of the West Antarctic ice sheet have begun an unstoppable slide towards oblivion, slowly melting in warmer-than-usual ocean currents that have been eating away at their bases. [Video Below]

“We have a fairly unique moment in the history of the world,” said Steven Philip Kramer, a professor at National Defense University, at the Wilson Center on April 17. “There’s never been a time when people have voluntarily produced fewer children than is necessary for sustaining the population.” [Video Below]

China leads the world in installed wind power by a wide margin, but last year, when it came to actual generation, China produced 20 percent less electricity from wind than the United States.

Last September, facing a growing public outcry to ease smog, China’s State Council called for the accelerated development of a new energy industry that turns coal into methane gas. Piped to Beijing and other cities, this gas could help cut down on smog by replacing dirtier fuels now used to cook meals, heat homes, and produce electricity. But embracing it involves a major environmental trade-off in overall carbon emissions.