Trump’s rant about immigrants eating pets was another sign of his break with reality.

Depictions of a quiet, peaceful manger scene miss the point.

Researchers are finally unraveling how the mind processes nothing.

What were we thinking, buying so many of these fragile, messy, remarkable ovals?

The problem for government employees isn’t just low morale. It’s the manufactured chaos.

The research on what smoke does to a body is just beginning.

Take a tour through the kaleidoscope of sight in the animal kingdom.