As far as I know, I am a human. Last time I had an MRI, nobody saw anything alien in my body — or at least nothing that worried them. My blood tests don’t raise eyebrows. It appears my human-ness is valid. But how do I really know?
The Pale Blue Dot
A photo of Earth taken by Voyager 1 in 1990 as it sailed away from us, more than 4 billion miles away, inspired Dr. Carl Sagan to say the following about our home — The Pale Blue Dot.
William Kamkwamba on building a windmill
When he was just 14 years old, Malawian inventor William Kamkwamba built his family an electricity-generating windmill from spare parts, working from rough plans he found in a library book. – from TED.COM I cried happy tears as I watched this remarkable young man make a short presentation about the windmill he built to produce […]