Concrete

The European Space Agency said Friday that urea, the main organic compound in urine, would make the mixture for a “lunar concrete” more malleable before it hardens into its sturdy final form.
If the tourists do make their way out to Zhaojin, 24-year-old An Rongbo will be there to greet them. Growing up in a neighboring
We've done a pretty good job of harvesting research, but in an economic crunch, why not try to do more? To illustrate the upside, here are two stories of "shelf technologies" that got turned into startup companies -- and what it took to do it.