Paleness, abundant perspiration, cold clammy skin, and deliriums or fainting are the symptoms of exhaustion.
Heat stroke can happen suddenly, the face becomes purple, skin is hot and dry and the victim does not sweat. Violent headaches and an increased pulse rate may also occur. Fainting can result.
Intense, blinding sunlight can lead to sun blindness produced by the sandy ground reflecting the short wave ultraviolet rays.
The is more salt in the Atlantic Ocean than the Pacific Ocean.
75% of all known species of plant and animal life live in The Earth's rain forest.
Avoiding soft sand while walking through the desert can reduce fatigue and increase survivability. Walk in the hollow of the sand dunes or on their peak where the terrain is most solid.
In the desert, do not strip off your clothes. Apart from the risk of severe sunburn, an uncovered body will loose sweat through evaporation requiring even more to cool it.
The effects of a sand storm can be avoided by digging a hole into the ground, getting into it, and covering it.
Rubbing yourself with chewed tobacco will drive off flies and mosquitos.
Distance is very difficult to judge while walking through the desert. A hill that seems only a few minutes away could very well be a few days away.
Anyone stranded with their car can dismount the headlights and try to send out distress signals with them during the night.
In the desert one can go without food for many days, it is less important than water, so ration food at the start.
If stranded, it is advisable not eat in the first 24 hours. Do not eat unless you have water since food takes a lot of body water to be digested. If water is scarce keep eating to a minimum and then try to eat only moisture containing foods such as fruits and vegetables.
Birds feathers give them good insulation against heat.
The grasses of Sahara and Gobi are neither nutritious nor palatable but in the Sahara and the Asian deserts you may find the Desert gourd, a member of the Squash family.
Most lizards are edible, with the exception being the venemous Gila monster and Pearl lizard.
In the desert all the tender parts of plants growing above the ground such as the flowers, fruits seeds and young shoots and barks can be eaten.
Beware of any plant excreting milky sap, the sap will burn the skin, cause blindness if it gets in the eyes, and is poisonous if eaten.
Desert often supports a variety of animal life that burrows into the sand or hides in any available shade during the day.
The deepest lake in the world is Siberia's Lake Baikal.
Ninety percent of the ice, and seventy percent of all the fresh water in the world is located in Antarctica.
Brazil has the most plant species of any country, with over 56,000 different species of plants.
The cleanest air in the world is in Tasmania. There are less pollutants in Tasmania's air than in any other country.
