"Old splits between rich and poor nations re-emerged on Tuesday over a plan to slow global warming, but both sides maintained a 'balanced package' is the goal of U.N. talks in Mexico."

"The Obama administration leaned heavily on Saudi Arabia to associate itself with the Copenhagen Accord climate change agreement, confidential State Department memos show."

"MEXICO CITY — President Felipe Calderon warned Monday that the globe is on the precipice of a tragedy if delegates at a U.N. climate change summit do not set differences aside and think of future generations."

"The U.S. is losing its edge in energy innovation to China, and it's time to reclaim it for the sake of future economic prosperity, Energy Secretary Steven Chu said in a speech on Monday."

"Almost 200 nations meet in Mexico beginning Monday to try to agree on modest steps to slow climate change, a U.N. gathering overshadowed by strains between the top two emitters, the United States and China."

"The global average temperature has increased over the past 160 years, but short-term trends in temperature and sea ice seem to be at odds with each other and need more research, the UK Met Office's Hadley Center said. In a report on long and short-term climate trends, the Hadley Center found several factors that indicate a warming world and said 2010 has been one of the warmest years on record."

Some transnational technology corporations see billions of dollars of business opportunity in China's rollout of a "smart grid" energy infrastructure in the next five years. No plans of comparable scale exist in the U.S.

"PARIS -- Government delegates from 48 fishing nations today failed to protect the spawning grounds of the vanishing Atlantic bluefin tuna, either in the Gulf of Mexico or the Mediterranean, although they did approve some protections for whitetip and hammerhead sharks."

"A boat resembling a flying saucer and run by the sun is making a stop in Miami."

"The United Nations' cultural arm UNESCO has appealed to Congolese President Joseph Kabila to guarantee there will be no oil exploration in the forest home of rare gorillas where two UK-listed firms hold drilling rights."