@ Istria- While the Altacama is likely the driest desert on earth, it is definitely not the hottest place on earth. That award would probably go to an area in the Libyan Desert. The meteorological station in El Azizia once recorded a temperature of 136 degree Fahrenheit in the shade. This is the hottest official atmospheric temperature ever recorded.
The temperature was recorded in a small box that was ventilated on all sides, with the thermometer placed about five feet off the ground. I can only imagine the misery of standing in the direct sunlight on that day. It's definitely worse than the 115 to 120 degree record temperatures recorded in my home town of Phoenix Arizona.