Yale astronomer Pieter van Dokkum has a passion for insects—especially dragonflies, which he photographs in exquisite detail near his home in Connecticut. He captured this time-lapse video, below, of ...

The Ohio Dragonfly Survey, which began in 2017, is in its third and final season of field work, and mountains of records have been contributed by scores of volunteers. More than 43,000 individual ...

The dragonfly in this reader’s photo has been identified as a green darner dragonfly with the botanical name Anax junius.

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