45.5% Americans who identify with the Republican Party, up from 40% a decade ago
45.2% Americans who identify with the Democratic Party, down from 49% a decade ago
408 Species that could be extinct by 2050 if global-warming trends continue
6.6 tons Average amount of greenhouse gases emitted annually by each American, an increase of 3.4% since 1990
$1.55 trillion Health-care spending in the U.S. in 2002, accounting for an unprecedented 15% of the nation's economy
$5,440 Average amount spent on each American, up 9.3% in a year, the largest spike in 11 years
$8.8 trillion Official value of the...
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