The things that mankind has tested and found right make for harmony and progress — or peace; and the things it has found wrong hinder progress and ma… - Richard E. Byrd

Scientists say that it is impossible for any life to exist deep underground, that the Earth is solid through and through. However, at this point in time, no scientist has actually ever been far enough underground to prove their theories.

At times I felt as if I were the last survivor of an Ice Age, striving to hold on with the flimsy tools bequeathed by an easy-going, temperate world. Cold does queer things. At 500 below zero a flashlight dies out in your hand. At - 550 kerosene will freeze, and the flame will dry up on the
wick. At - 60° rubber turns brittle. One day, I remember, the antenna wire snapped in my hands when I tried to bend it to make a new connection. Below - 60° cold will find the last microscopic touch of oil in an instrument and stop it dead. If there is the slightest breeze, you can hear your breath freeze as it floats away, making a sound like that of Chinese firecrackers. As does the morning dew, rime coats every exposed object. And if you work too hard and breathe too deeply, your lungs will sometimes feel as if they were on fire.

Why is the sun invisible so long in winter near the farthest points north or south?