A new study of more than 2,500 children under 5 found little difference in autism symptoms between boys and girls.

A computer simulation shows how two neutron stars of unequal mass merge, form a black hole and spit out a jet of high energy matter.

A plastic structure separates white noise into pitches, like a rainbow splits light into colors, offering a novel way to manipulate sound.

With CDC upheaval, new limits on who can get some vaccines and an ongoing measles outbreak, parents like me face unfamiliar hurdles to protecting our kids.