Some "Ghosts" May Be Sound Waves Just Below Human Hearing

There are many possible explanations for hauntings, not least that humans are highly suggestible creatures, especially when we want to believe. But some ghost sightings might actually be the result of sounds — sound waves that vibrate just below our range of hearing, dubbed the “fear frequency.” »10/27/15 1:00pm10/27/15 1:00pm

This Year the Medicine Nobel Prize Went to a Pair of Parasite Poisons

The 2015 Nobel Prize for Physiology or Medicine just went to three scientists who found parasite-killing chemicals that are now important tools for fighting human diseases. But the chemicals in question weren’t created in a lab: one is produced naturally by a bacterium, the other by a plant used in a traditional… »10/05/15 6:53pm10/05/15 6:53pm