Minuscule solar cells that can fix themselves using the same building blocks as plant cells have been demonstrated, with our old friend the carbon nanotube one of the key components that holds these self-healing power units together.
During the night, this tower is an energy-generating waterfall. During the day, it creates power using large solar panels while allowing bungee jumpers to leap from level 90.5.
Scientists have discovered that they can coax a tobacco plant into growing temporary solar cells by injecting it with a genetically engineered virus. Freaky, but the process may provide us with cheaper synthetic photovoltaic cells once quirks are sorted out.
Glucose-powered bio-batteries aren't a brand new idea, but Japanese toymaker Takara may be among the first to attempt to use them in their products. They've made some prototype remote controlled toy cars which run on our favorite sweet drinks.
I always feel warm and fuzzy when the Christmas tree gets put up, but it's definitely not because I'm sweating from pedaling bikes to keep the decorations glowing. I'll leave that to these crazy folks in Copenhagen.