Our Photo Desk call-out for reader photos for the week of April 15-21 is on the theme of spring. Images uploaded to us through Flickr are contained in a separate gallery. This gallery showcases images ...

If you can ever peer beyond three dimensions, you will be able to see wondrous things: hyperdimensional jewels; shapes made of cubes and spheres arranged in mind-boggling formations. These beautiful ...

The Museum of Math's Hyper Hyperboloid lets you twist straight cords into a curved shape. Museum founder Glen Whitney demonstrates. A child tries out a square-wheeled tricycle, which rolls smooth on a ...