Apparently, this user prefers to keep an air of mystery about them.
6 What does a wing do that an engine can't? jun 28 '14
2 Dying question: Tractor wheels — large vs small nov 9 '14
2 Why is it so easy to create audible sound? dec 23 '14
1 If the Earth is a good conductor of electricity, why don't people get electrocuted every time they touch the Earth? mar 30
0 Why can we cycle faster than we can run? sep 30 '14