People have often wondered about this, to the extent that it has become an enduring sense of anxiety: Can snakes recognize human beings? What’s the logic behind their “attack” then? How do they pick ...

Sand has a memory of sorts. Press into a loose pile of dry grains and something moves, not just where your finger sits, but farther out, ahead of where you have not yet reached. That disturbance ...

We know our past selves have changed—physically, emotionally, cognitively, interpersonally—but we also know that we are the same person from childhood into early adulthood and beyond. It's easy to ...

It's the feeling of personally remembering. For semantic memories, this sense is not as strong—you can have detached knowledge without the context of "how" and "when." For instance, I know that ...