Get ready for Earth Day

April 22nd is the 40th anniversary of Earth Day. Originally it was about awareness and appreciation of the Earth – but we like to think it's a good time to change a habit or two. After all, our health is tied intrinsically to the health of the Earth.

So here's one idea to get you started * Don't just turn off – unplug.

It's called vampire electricity (or, more boringly, standby power), and it's the electric power consumed by electronic appliances while they are switched off or in a standby m...