Why you'see' things in the dark, according to an ophthalmologist Science explains why we see flickers of light and patterns in the darkness. Our eyes sometimes really do play tricks on us at night. Breakthroughs, discoveries, and DIY tips sent every weekday. In 1999, Daniel Myrick and Eduardo Sánchez shot one of the definitive horror films of the era on a budget of roughly $60,000. is a study in omission, in the conspicuous absence of the visual effects characteristic to the genre. In lieu of baroque prosthetic gore and over-the-top CGI effects, the movie leans into silence and darkness for much of its 81-minute run time.

Can dogs really smell fear? Dogs' super-sensitive noses may have evolved to help them sense danger. Dogs have an extraordinary sense of smell, but is it enough to smell their pet parents' fear? Breakthroughs, discoveries, and DIY tips sent every weekday. Or dreading that dentist appointment you have in a few hours.

With senses far sharper than ours, dogs detect what we can't--perhaps more than we realize. Dogs have an extraordinary sense of smell and hearing. Is it enough to perceive things from the great beyond? Breakthroughs, discoveries, and DIY tips sent every weekday. M arc Eaton, a professor of sociology at Ripon College remembers talking to a paranormal investigator who had recently lost his father.