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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 …