| CNN.com delivers up-to-the-minute news and information on the latest top stories, weather, entertainment, politics and more. | Ukraine digs in as Russia amasses troops | | U.S. officials have estimated Moscow has massed around 40,000 troops on the border and that 25,000 more are deployed a little deeper in Russia. Among the Ukrainian people, fear of an invasion is palpable. |
| Next century's forecast: Hotter, hungrier | | A UN report urged governments to address the "increasingly clear" threats posed by a warming climate before some options are closed off for good. It adds that reducing carbon dioxide emissions could buy more time to adjust to a warmer world. |
| Next century's forecast: Hotter, drier, hungrier | | | A UN report urged governments to address the "increasingly clear" threats posed by a warming climate before some options are closed off for good. It adds that reducing carbon dioxide emissions could buy more time to adjust to a warmer world. |
| Climate change | | | Your forecast for the next century: Hotter, drier and hungrier, and the chance to turn down the thermostat is slipping away. |
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