Occupying its outermost third is a convective zone where gas is rising and falling in planet-sized cells.

BBC: Sun, Trace

Countries on every corner of this Earth now recognize that energy supplies are growing scarcer, energy demands are growing larger, and rising energy use imperils the planet we will leave to future generations.

WHITEHOUSE: President Obama Pushes Clean Energy

With new technologies rising faster than sea level on a hot planet, America is headed for the biggest energy boom in 60 years.

FORBES: Fiscal Cliff? What We Really Need Is Another Stimulus

We must use all resources and develop all technologies necessary to rescue our economy from the damage caused by rising oil prices and restore the health of our planet.

CNN: McCain: Change is coming

"Six Degrees", by leading environmental campaigner Mark Lynas, sounds a red alert for the health of the planet, charting degree-by-degree the likely consequences of rising temperatures up to the worst-case scenario 5.8 degrees Celsius (10 degrees Fahrenheit) rise envisaged by the Intergovernmental Panel on Climate Change's 2001 report.

CNN: Six degrees of devastation

And I think we continue to be heartened by progress that's being made in Congress to address how to make ourselves more energy independent and protect our planet, and how do we drive down the costs for families and small businesses struggling with the rising cost of health care.

WHITEHOUSE: Press Briefing