Massive floods struck three countries this week: Australia, Brazil, and Sri Lanka
Different groups of scientists use different methods to track global surface temperatures, but the data shows the same warming trend.
Glen MacDonald, of UCLA, talks about the threat of drought in the Southwest and what it means for water supply.
Arctic warming and loss of sea ice may be helping to drive cold air southward, into the US and Europe, according to recent studies.
About half of all the CO2 that has been pumped into the atmosphere since the beginning of the industrial era, 250 years ago, has been absorbed by the oceans.
November 30th marked the official end of the 2010 hurricane season, here are some pictures from this year's storms.
The average temperature in Moscow during June, July and August 2010 was significantly hotter than any year since 1950.
The average temperature in Moscow during July 2010 was significantly hotter than any year since 1950.