When Was the First Interstellar Radio Message Sent?
The Arecibo Message, humankind’s first interstellar radio message, sent from the Arecibo Observatory in Puerto Rico in 1974, is a three-minute message of exactly…
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Knowledge
How Did Science Begin?
Science began with the wish of some prehistoric man to find out about the workings of the world about him. But the first recorded scientific
Why Do We Have Brains?
Why Do We Have Brains? The brain directs and coordinates movements and reflexes, registers sensations and is the supreme nervous organ by wh
How Did Schools Start?
How Did Schools Start? Teaching began long before there were any schools. Early children learned most of their skills from their elders. But