If you’ve spent any time around bottlenose dolphins—or even watched “Flipper“—you’re probably familiar with the sound. The marine mammals make high-pitched, repetitive whistling noises constantly, ...

New work suggests that dolphins each have their own distinctive whistle, and respond to hearing their sound made by calling right back. Photo by Flickr user gvgoebel If you’ve spent any time around ...

When you deform a soft material such as Silly Putty, its properties change depending on how fast you stretch and squeeze it. If you leave the putty in a small glass, it will eventually spread out like ...