Sunrise at noon in the Arctic. Little exposure to sun was a piece of the genetic puzzle.
Bering Land Bridge National Preserve
Why was one gene mutation that affects hair, teeth, sweat glands and breasts ubiquitous among ice age Arctic people? New research points to the advantage it provided for ancestors of Native Americans.
Fluorescent lights do emit UV, but not enough to harm human health.
The internet conspiracists are half right: most lights we have inside do emit UV, but not enough to harm us.
Government of Alberta/Flickr
Ultra-violet (UV) light can destroy a fungus that's devastating the animals in North America.
Spend many months attached to the ISS and see how well you grow.
If you want to live on Mars, you're going to need to grow food. Seeds are naturally equipped to handle challenging Earth environments, but how well can they survive what they'll encounter off-planet?
Don’t skimp on the SPF.
Sabphoto via Shutterstock.com
Energy from the sun's rays can cause skin damage and cancers. Sunscreens can absorb or reflect the dangerous UV light. Here's how it works.
Achievement unlocked: Rewritable paper.
Coating paper with an inexpensive thin film can allow users to print and erase a physical page as many as 80 times. That reduces both the cost and the environmental effects of paper use.
New research from the University of Geneva is helping us understand how plants protect themselves from the sun.
A woman sunbathes on a warm summer day on a private beach in Nice, France.
The risks of UV radiation exposure are well-known, but some scientists are exploring lesser-known benefits of UV light.
The UV Index was created last century largely for North American and European conditions, which rarely reach the ‘extreme’ range.
Alongside the day's high and low, weather reports generally contain a UV alert for a particular time. But what does it actually mean – and what should you do about it?
International Agency for Research on Cancer has classified UV-emitting tanning devices as a Group I carcinogen – the most dangerous cancer-causing substances.
Tanning bed via www.shutterstock.com.
Researchers have estimated that 8% of the five million cases of skin cancer diagnosed each year in the US can be attributed to indoor tanning.
The galaxies NGC 4038 and NGC 4039, locked in a destructive embrace.
After a slow start, Hubble's ultraviolet vision changed the face of astronomy.
Throwing in the towel.
Despite the many awareness-raising campaigns on the harmful effects of ultraviolet (UV) radiation, a walk along any tourist beach will tell you just how many sun worshippers continue to soak up the sun…
The West African Gaboon viper’s pattern of cream, yellow, brown and black scales helps it blend in with leaves, but a new…
This is bad, but it would be a lot worse without the ozone layer.
SAVING THE OZONE: Part three in our series exploring on the Montreal Protocol on Substances that Deplete the Ozone Layer – dubbed “the world’s most successful environmental agreement” – explains why we…
Cotton coated with the superhydrophobic material repels a drop of water.
A new coating for cotton that is 1½ times more water-repellent than Teflon can survive for dozens of machine washes, say…
Children who live further from the equator are more likely to develop food allergies and eczema because they receive less…