Communication
How has the way we communicate changed over time? Look here to see some communication achievements: Communication Through the Ages
There are many timelines that show important steps in communication technology. Have a look at some of these:
About.com - The history of communication
YouTube - The history of communication - this video was made by children at school. What do you think of it?
Do you want to know how all the technology works? Explain that Stuff is great for how things work.
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Telegraph The telegraph was able to send Morse code messages through wires (we still talk about telegraph poles) to a receiver. Every post office had telegraph officers who were trained in Morse code, so people could write out a message in a post office, paying for each word sent. Then the message was telegraphed to another post office where the message would be delivered by a special messenger. This was the fastest way to get a message to anyone before telephones.
To see a telegraph in action click here.