With the rise in energy costs, heating and cooling entire buildings is starting to make less and less sense. What if, instead, each person could have their own efficient, low-cost personal comfort solution that could make you feel less hot or cold, controlled to meet your individual needs? Ideally, each individual would have an entirely self-contained solution that helped them feel warmer or cooler and didn't interfere with anyone else's personal comfort.

For examples of the types of solutions, check out these links:

• "MIT wristband could make AC obsolete"
• NASA cool suits