test content here
Dragonflies, from the order Odonata, have been around for over 250 million years. I've seen fossil dragonflies from the Eocene some 50 million years ago that would have been exquisite monsters to behold. Huge beasts taking to the skies and enjoying the warmth that the Earth was experiencing at the time.
The most conspicuous difference in their evolution over time is the steady shrinking of their wingspan from well over two and a half feet down to a few inches.
Please donate so science experts can write for the public.
At Science 2.0, scientists are the journalists, with no political bias or editorial control. We can't do it alone so please make a difference.
Donate with PayPal button
We are a nonprofit science journalism group operating under Section 501(c)(3) of the Internal Revenue Code that's educated over 300 million people.
You can help with a tax-deductible donation today and 100 percent of your gift will go toward our programs, no salaries or offices.
