300 million years ago dragonflies had wingspans of 1 meter. Here is why #shorts

Three hundred and fifty million years ago, long before the dinosaurs, the Earth was covered in enormous forests of scale trees sixty meters tall, filled with giant dragonflies with one-meter wingspans, two-and-a-half-meter millipedes, and an atmosphere containing thirty-five percent oxygen — this was the Carboniferous period, the age that built the coal beneath our feet.
This sleep documentary explores the extraordinary world of the Carboniferous period — the giant ancient forests, the creatures that no longer exist, the oxygen-rich atmosphere that made them possible, and the slow process by which the dead forests became the coal that powered the Industrial Revolution and built the modern world.

Видео 300 million years ago dragonflies had wingspans of 1 meter. Here is why #shorts канала Stories Before Time