The human eye can detect a candle flame from about 1.7 miles away on a clear, dark night.
Fact #10455
More Human Body Facts
The human brain uses about 20% of your body's total energy.
Fact #2340 · Human Body
Your brain senses reality.
Fact #2325 · Human Body
Your brain can store the equivalent of millions of gigabytes of information.
Fact #2136 · Human Body
Your brain processes reality.
Fact #2399 · Human Body
Your brain generates signals.
Fact #2411 · Human Body
The human jaw is the fastest-healing part of the body.
Fact #3284 · Human Body
More than half of all humans ever lived died before age 10.
Fact #3089 · Human Body
The human body contains about 206 bones.
Fact #267 · Human Body
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