Is the speed of technological change an illusion?

Why America's treasured forests sometimes just need to burn.

Just as we are poised to begin exploring the frontiers of deep space, a sad truth is beginning to emerge: Far from being a naturally spacefaring species, we are frail creatures who may not be able to function for long periods outside the gravity, atmosphere, and magnetic field of mother Earth.

Gossip in the glory days of Rome was just like ours—but written in stone.

Biology's chief provocateur explores the evolutionary origins of cooperation, warfare, and the tribal mind.