Evolving For Advantage On some ancient battlefield, an early human soldier realized that a sharpened stick could become a deadly spear that would send the terrified enemy scrambling for safety. In response, the defeated soldiers came up with their own innovation: wooden shields that blunted the spears and suddenly turned the tables. It was then up to the attackers to devise another new weapon that could defeat the shields and restore their advantage. An arms race was born.
But it was far from the first. For billions of years, life on Earth has been engaged in its own ETERNAL ARMS RACE, the subject of Part 3 of NATURE’s TRIUMPH OF LIFE. As predators became better hunters, their prey also evolved better defenses.
