Beauty on the Wing: Life Story of the Monarch Butterfly is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV ...

Insects possess compound eyes formed of discrete, elongated units known as ommatidia. Like pixels in a camera sensor, each ommatidium samples a portion of the visual space and provides a fraction of ...

At-home remedies can often help get rid of bags under your eyes. Usually, having eye bags is the result of a harmless cosmetic concern rather than a medical problem. You might have eye bags ...

Scientists usually study butterfly lifespans by marking them, and then either recapturing or observing them later. Researchers can also estimate a butterfly’s age by the condition of its wings. All ...

If your eyes bulge more than is typical, it could be a serious health condition like hyperthyroidism. It’s important to share your symptoms and medical history with your doctor. Depending on the ...

The compound eyes of insects can detect fast-moving objects in parallel and, in low-light conditions, enhance sensitivity by integrating signals over time to determine motion. Inspired by these ...

Red eyes are caused when blood vessels in the sclera (white part of the eye) swell or burst. This may cause redness in part or all of the eye and result in other symptoms such as itchiness or blurred ...

Yellow or green discharge (pus) in the eye The eyelids are stuck (matted) together with pus after sleep After being wiped away, the pus comes back during the day Often caused by a bacterial eye ...

Holiday rom-com lovers who are also slasher film completists: That’s the coterie that might go for Josh Ruben’s “Heart Eyes,” a romantic comedy feebly masquerading as a horror movie.