When we think of a desert, wide expanses of sand immediately come to mind. But...
In the wilderness you are on your own. Or at best in the company of...
When one is aware of the basic tenets of survival, an extreme situation, with possibly...
A sundial is a fascinating piece of equipment. It not only tells us directions but...
Some people use two-way radios or walkie-talkies for communications. These may be used during events,...
The Earth is like a sphere, rotating around a central axis. More than seven billion...
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