Twixt Spelunking and Space Travel

I never knew cavers used carbide lamps as late as the 1980s. I guess it makes sense, after reading this story by Robert Zimmerman for UPI. After all, we still use 19th Century technology to heat our homes, fuel our cars and power our 21st Century technology. Most U.S. cities still have ugly electrical lines strung across the landscape!

This huge change in human civilization that is happening all around us will only become more evident as time goes on. All the things we have been hearing about--flying cars, lunar bases, foldable computer screens you can slip in your pocket--are being developed now. We are standing at the threshold of an Age of Discovery unlike any known before.
And I can't wait...what about you?