The human retina is sensitive to the ultraviolet (UV) spectrum down to about 300 nanometres, but the lens of the eye filters it out. This adaptation perhaps arose to protect the retina from the more ...

Research suggests that your dog may be able to see things that are completely invisible to you. If you look at the size, shape, and general structure of a dog's eye it looks very much like the human ...

Imagine stepping into a world where hidden colours and patterns come to life—a realm of vibrant UV signals and secret messages invisible to human eyes. While human vision is limited to the visible ...

Some animals have fur that protects their skin. But humans use sunscreen when they go outside. I asked my friend Michael Smerdon how it works. He’s a biochemist at Washington State University. He told ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. While ultraviolet (UV) light is harmful for human skin, it could be ...

The UV index measures the intensity of skin-damaging ultraviolet radiation at the Earth's surface. The UV index ranges from 0 to 11-plus, with higher values indicating greater risk of sunburn and skin ...

Several bats glow bright green under ultraviolet light. The glow could reveal clues about evolution in these mysterious night creatures.

A desk with a laptop, writing supplies, and a UV sanitizing lamp - Anna Sadovskaia/Shutterstock Our phones, tablets, laptops, and remote controls are handled countless times throughout the day, and ...

A team of UC Riverside researchers has identified a potential breakthrough in solar desalination that could reduce the need ...