Turning blue is not something we tend to associate with a viral infection. And yet, this Smurf-like symptom is common among invertebrates. Photographer Josh Coogler from Dallas, North Carolina, found ...

(CN) — The Xerces blue butterfly was last seen in the early 1940s in San Francisco. The small, iridescent blue insect, originally discovered in 1852, was endemic to and once plentiful among the ...

Most of the periodical cicadas emerging across the eastern U.S. in this year's rare dual emergence event have blood-red eyes, but sightings of blue-eyed variants have recently been reported. When you ...

It’s been roughly 80 years since the Xerces blue butterfly was last spotted flitting about on pastel wings across coastal California sand dunes. But scientists are still learning about the insect. The ...