Star Trek Actually Got Tractor Beams Right

We've made another step forward in building real-life tractor beams. Turns out that the trick is in the angle of the beam, and Star Trek did a pretty good job of representing what a real tractor beam could look like. » 3/18/14 12:00pm 3/18/14 12:00pm

Hawkmoths use their genitals to scare off bats

Bats hunt moths and other insects by using echolocation, where they emit ultrasonic calls and analyze the rebounding sound. So to avoid getting eaten by hungry bats, hawkmoths blast the flying mammals with their own ultrasound…which comes from their genitals. Seriously. » 7/04/13 10:30am 7/04/13 10:30am

Hear the ultrasonic scream of this pint-sized primate!

At just five inches long, tarsiers are among the world's smallest primates. And yet they communicate much like humans, using a wide range of calls to communicate. That's why it's so weird that some tarsiers apparently stay completely silent. » 2/08/12 5:00pm 2/08/12 5:00pm

Ultrasound Can Give You Memories of Learning Things in College

Want to remember doing something, like attending 400 lectures on molecular cell biology, without ever actually having to do it? A special kind of ultrasound can trigger neurons in your gray matter, and the team of Arizona State neuroscientists who discovered this immediately played the Total Recall » 10/31/08 8:00am 10/31/08 8:00am card. They're…