2. China is spending heavily on renewable and nuclear energy as it tries to slow the growth of coal, but despite those efforts it has become by far the largest emitter of greenhouse gases. Its emissions of 10 billion tons a year of carbon dioxide from the burning of fossil fuels and cement manufacturing are almost twice those of the United States, though emissions per person are still far higher in the United States.
4. ? Dozens were killed, hundreds of miles of coastline were flooded and New York City's infrastructure was dealt a massive blow as the super-storm Sandy moved through the mid-Atlantic states on Monday night and into Tuesday. Millions of people were left without power.