Monthly Archive: May 2018

The obesity paradox: Can being overweight be beneficial?

  Rich Haridy New studies rekindle debate over whether obesity can be beneficial in some health situations(Credit: Whitewolf/Depositphotos) Over 15 years ago, a strange counter-intuitive bit of data was identified in patients undergoing hemodialysis for chronic kidney disease. Across several studies, overweight or …

Does quantum tunneling take time or is it instantaneous?

  Michael Irving Researchers at the Max Planck Institute have determined how long it takes electrons to quantum tunnel(Credit: fredmantel/Depositphotos) In the weird world of quantum physics, it’s not unusual for particles to tunnel through barriers that under normal circumstances they shouldn’t be …

Is human civilization Earth’s first?

by Robby Berman (NASA Goddard and Steve Byrne) Is human civilization Earth’s first? A paper recently published in International Journal of Astrobiology asks a fascinating question: “Would it be possible to detect an industrial civilization in the geological record?” Put another way, “How …