2 shelters for arid environments, ThermalWing is one of the winners of the Ecoshack Green Tent Design competition. The brief was to design an environmentallly sustainable camping shelter. The ThermalWing is designed to provide shade during the day and to reflect surface heat during the night. More info can be found in this pdf press release.
Slightly more technical in nature is the Desert Seal which uses a solar film to power electric fans.