Lifehacker has a week long series called Beat the Heat. Basically, it is a rundown of tips and tricks to help you stay cool and maybe save some money doing so. A couple of the highlights I enjoyed:

* Summer Foods that Cool You Down

* Hang a Damp Towel to Cool a Hot House

* Four Myths About Staying Hydrated Debunked

* Cool Down a Scorching Car as Quickly as Possible

* How to Sleep Comfortably on a Hot Night