Every single week day, people come back home after a day of work and almost simultaneously start using lots of energy intensive-things; they turn on the television, the computer, turn on the lights if it's dark, they plug in their cell phones and gadgets... And then they start cooking food.

We're all getting more aware of our energy consumption when it comes to cars (hybrids and electric cars are getting more popular) and to lighting (compact fluorescents took over in only a few years), but most of us are still in the dark when it comes to energy-efficient cooking. Here's a few common sense tips to get your started on the road to low energy cooking.

For Barack Obama, climate change is change we can believe in.

Speakers at the Democrats’ convention this week, by and large, have taken as dim a view of fossil fuels as the Iraq war. If you were quaffing your brew at each mention of "alternative energy" from the podium, you’d have a lot of recycling to do by now. The green theme climaxes tonight, with environmental hero Al Gore setting the stage for the candidate’s address.

Would you believe that there are places and times when power companies generate so much renewable energy that they give it away?

In west Texas and Illinois, when the wind blows at night and nuclear plants run around-the-clock, power generators produce more electricity than people need. This oversupply “has forced electricity prices into the negative range,” an expert explains—meaning that some customers are paid to use electricity.

President Barack Obama has said he will go to Copenhagen next month to secure an international deal on climate change.

A key global treaty to stop global warming almost collapsed last week after poorer nations threatened to walk out unless rich countries like America agree to cut their emissions.