Why Prehistoric Giant Insects Became Massive May Have Little to Do With Oxygen
Nature World News | 14.05.2026 20:30
For more than a century, scientists believed they understood why prehistoric giant insects once ruled Earth. Ancient dragonflies with wingspans wider than modern hawks and enormous millipede-like creatures seemed to point toward one explanation: oxygen. According to the long-standing oxygen theory insects hypothesis, Earth's atmosphere once contained far more oxygen than it does today, allowing insects to grow to extreme sizes.
