Germans are famous for inventing just the right compound word to describe something ineffable. They should make one up for the sensation of being simultaneously exhausted by the past and ecstatic about the future. In English, let’s call it Berlinism.

Enerkem's corporate plan is in the trash -- literally.

Energy harvesting revolving doors capture otherwise wasted human energy and convert it to electricity to power the installation site, for example lighting and signage.

 We’ve talked here before about the importance of choosing recycled toilet paper. There’s really no reason that ancient forests should be wiped out just so we can wipe our behinds.

Painting the roofs of buildings white has the potential to significantly cool cities and mitigate some impacts of global warming, a new study indicates. The new NCAR-led research suggests there may be merit to an idea advanced by U.S. Energy Secretary Steven Chu that white roofs can be an important tool to help society adjust to climate change.

It's a tall order: Over the next few decades, the world will need to wean itself from dependence on fossil fuels and drastically reduce greenhouse gases. Current technology will take us only so far; major breakthroughs are required.

Green technology: In Sweden garbage is blown under city streets for recycling

Solar panels come in all sizes, shapes, materials and cost. A 18 year old invents a prototype that could make this technology readily available in developing countries

At a time when Canadian consumers are paying for every shopping bag used supermarket bags and plastic sheeting, cable sleeves or vehicle components  now go from the  trash can to the fuel tank offering a solution to Europe's energy problems while taking care of a huge garbage problem as well.

Ethanol from algae could eventually replace natural gas.