Dear Abby: Which is correct: “I couldn’t care less” or “I could care less”? I have always said “I couldn’t care less,” meaning, “I could not care any less about it than I do now.” However, I have ...

Up until the mid-20 th century, light was pretty ordinary. Yes, it was both a particle and a wave, but it didn’t do anything very weird. Then scientists, under-employed after the end of World War II, ...

A twin pregnancy is when there are two fetuses in the uterus at the same time. Twins can be identical, meaning they developed when a single fertilized egg split early in development, or fraternal, ...