CNN's Casey Wian reports on how some California businesses hope going "green" will put them in the black.

HLN Money Expert Clark Howard visits a model home to show you how to save money and energy

Is the Recession Giving Earth a Break?

The lower manufacturing output associated with the recession has had a tiny curbing effect on global CO2 emissions, buying us a tiny amount of extra time in which to address the climate crisis. That's the good news, says paleontologist and extinction expert Peter Ward. The bad news is that severe climate change is happening anyway, and its likely impact keeps him awake at night.

Perhaps we shouldn't feel too guilty about our destructive potential; Ward has famously hypothesized that multicellular life as a whole is suicidal over the long term, and believes that intelligent life might actually provide the only loophole. It would be a shame, though, if we were to finish ourselves off: Ward believes that while other planets in the universe probably do contain intelligent life, they are also likely to be incredibly rare.

How can scientists better sound the alarm, and connect with the public in general? Ward has some ideas about that too, and fondly remembers a late scientist who was one of the best in the field at bringing science to a lay audience.

HLN Money Expert Clark Howard has the greenprints for your home that'll save you big on becoming more energy efficient

Can Obama Keep His Climate Change Promises?

EU Ambassador John Bruton thinks Obama’s stance towards climate change is encouraging, but says Europe won’t be impressed until Congress passes meaningful climate change legislation.

Toyota brings home the top prize at the World Future Energy Summit in Abu Dhabi. CNN's Cal Perry reports.

Gore Is Too Sunny on Climate Change

Stewart Brand

Author, "The Whole Earth Discipline"
One of the godfathers of green explains why “environmentalists grasp at straws a little with wind and solar,” and why Al Gore is too optimistic about our prospects of solving the climate crisis quickly.

Hong Kong holiday decorations go green with energy-efficient LED lights.

Climate change debate

CNN's Christine Romans has a look at companies spending money on climate change.

What is carbon trading?

Carbon trading, a mechanism to tackle global warming, is high on the Copenhagen agenda.

Struggling with climate change

Fluctuating temperatures and erratic weather are cause havoc in Grenada.

Sweden's 'green' city

CNN's Jim Boulden reports on a Swedish city that has cut emissions, while keeping its economy growing.