A HuffPost/YouGov poll shows that 45 percent of Americans believe in ghosts, or that the spirits of dead people can come back in certain places and situations.

The idea of ghosts as hopeful evidence of life after death goes all the way back to ancient Egypt, where it was commonly believed that death was merely a transition to some mysterious netherworld of another existence.

While skeptics deny the existence of ghosts, claiming there's no real evidence, polls and surveys have shown the public strongly disagrees.

Of the 1,000 adults interviewed Dec. 17-18, the HuffPost/YouGov poll revealed 45 percent believe in ghosts, or that the spirits of dead people can come back in certain places and situations. When asked if they believe there's a life after death, 64 percent responded Yes. While 59 percent of adults don't believe they've ever actually seen a ghost, 43 percent also don't think that ghosts or spirits can harm or interact with living people.