We made the world's sharpest petrified wood knife with our 60,000 PSI waterjet and some other goofy methods. It turned out ...

It is the biggest festival of the year in China, signalling the start of spring, and this is the year of the wood snake. According to Chinese astrology, the characteristics of the snake ...

and phosphorous (KREEP for short), they would know when the moon was 99% crystallized. Dauphas and collaborators wondered if an answer might be locked inside moon rocks retrieved by Apollo astronauts.

Scientists figured that if they could find a precise age for this magma layer, which contained a lot of potassium, rare earth elements, and phosphorous (KREEP for short), they would know when the moon ...