I was over at BoingBoing scrolling back thru their posts of the last couple of days. I scrolled back to the articles from before Curiosity successfully landed on Mars to the articles about what was going to happen when Curiosity landed. It occurred to me that when the space craft actually landed we effectible started a new era. The era called AC.

• BC = Before Curiosity
• AC = After Curiosity
• DC = Direct Current