A blueprint for disaster in any society is when the elite are capable of insulating themselves.

We're uncomfortable about considering history as a science. It's classified as a social science, which is considered not quite scientific.

Our biggest threat is not an asteroid about to crash into us, something we can do nothing about. Instead, all the major threats facing us today are problems entirely of our own making. And since we made the problems, we can also solve the problems.

I personally am not conscious of my accent.

Perhaps our greatest distinction as a species is our capacity, unique among animals, to make counter-evolutionary choices.

In parts of Montana, salt concentrations in soil water, have reached those double those of seawater.

Rhino-mounted Bantu shock troops could have overthrown the Roman Empire. It never happened.