A pulse of light sets the tempo in the material. Atoms in a crystalline sheet just a few atoms thick begin to move—not ...

When a laser beam is incident on a narrow opaque object such as a fine wire or a strand of hair, the resulting diffraction pattern is similar to the diffraction pattern of a slit of the same width as ...

For the first time in 35 years, the Billboard Top 40 has no hip-hop or rap songs. Here’s why Landmark Mars mission and first ...