For most of the developed world, a flick of a switch brings the lights, television, computer, and dozens of other gadgets and appliances to life without question. This seemingly simple luxury, however, masks a complex network of interactions between a variety of suppliers and services, both public and private. Communication between these entities is complicated -- but smart grid technology attempts to make it more effective, more interactive, and ultimately, more efficient.
They may seem like a fun water sport or a noisy nuisance, but whatever your stance on personal watercraft, there's no denying they pollute. So how bad are they?
Shedding light on dark energy has been a bit of a challenge for today's astronomers. What dark energy actually is goes beyond our present scientific understanding.