In quantum entanglement first, scientists link distant large objects

Physicists create quantum entanglement, making two distant objects behave as one.

Credit: Niels Bohr Institute
  • Researchers accomplished quantum entanglement between a mechanical oscillator and a cloud of atoms.
  • The feat promises application in quantum communication and quantum sensors.
  • Quantum entanglement involves linking two objects, making them behave as one at a distance.
  • Keep reading Show less

    The average lifespan of a friendship? 10 years. Here’s why.

    This is the psychology of why friendships (and marriages) fail.

    • Some friendships last a lifetime, but most have a lifespan. In the U.S., best friends tend to last for 10 years on average, says Nicholas Christakis.
    • In friendships, one person may begin to defect or "free ride", which causes the other person to choose between cooperation or defection. People tend to choose the latter so they won't be taken advantage of.
    • A certain amount of social fluidity, taking a breather from a friendship, can actually make a friendship last longer.
    Keep reading Show less
    Quantcast