concurrent versions system

Let’s say you want to get the attention of a male clerk in the produce section of the grocery store. Would you say, “Excuse me sire, but could you please explain the difference between a yam and a sweet potato?” (For the answer to that question, read this.) Addressing a stranger as “sire” might raise an eyebrow. But if you said it, you wouldn’t necessarily …

There may be a new planet joining the solar system. A provocative hypothesis posed by a duo of planetary astronomers from the University of Louisiana-Lafayette includes the existence of the planet Tyche: a ninth planet estimated to be four times the size of Jupiter located somewhere at the outermost reaches of the solar system. It’s hard to know what is more enjoyable: stories about planets …