Dragonflies ruled the air. When they evolved some 300 million years ago, they were unquestioned masters of the skies. They were also large – a fossil dragonfly had a wingspan of about 75 cm! Today, we do not have such…
Dragonflies ruled the air. When they evolved some 300 million years ago, they were unquestioned masters of the skies. They were also large – a fossil dragonfly had a wingspan of about 75 cm! Today, we do not have such…