Smart, as its name implies, requires lots of data from a range of sources and types. For example, smart cities require data ...

The tiny nucleus of the comet (not visible) is surrounded by a bright halo of gas known as the coma. A long tail stretches away from the comet, and we see hints of rays, jets, streams and filaments.

Bright flash and house-rattling boom was seen and heard over southeastern B.C., with footage showing the sky brightening ...