Hotter than a crocodile, cooler than a chicken, T. Rex was definitely warm-blooded, according to a new study.

A new study challenges the long-held idea that habits form only through slow, gradual repetition. What if your habits don’t form through countless repetitions over months or years? What if the brain can decide, almost instantly, that a behavior is no longer worth thinking about? That possibility is at the center of a new Johns [...]