Orchids give nothing in return to pollinators, so how come they get visited by bees anyway? The answer is trickery and deceit.
Ultraviolet radiation at specific wavelengths is great at killing germs – but when used incorrectly, it can also cause health risks.
Our ancient ancestors didn’t have clothes or houses – but that constant exposure to the sun helped their skin protect itself from the worst sun damage.
While sunscreen has the potential to reduce skin cancer for light-skinned people, it has never been shown to do the same for Black people. Yet that distinction is lacking in public health messaging.
Sunflowers have hidden patterns of ultraviolet colours — visible to pollinators, these colours are due to the presence of pigments that also help plants retain moisture.
UV disinfection is a proven means of killing pathogens like the SARS-CoV-2 virus, but it’s not risk-free.
While sunscreen has the potential to reduce skin cancer for light-skinned people, it has never been shown to do the same for Black people.
You can see glow-in-the dark paint, but if you touch it, it is just as cold as the bedroom wall. So the glowing of the paint is different to the glowing of a light bulb.
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.
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.
Melanoma, the deadliest form of skin cancer, can usually be cured when caught early. When it has spread, however, it becomes a challenge. Recent findings are bringing hope. Here are a few examples.
Orkney’s ultra-high incidence has been linked to the weak northern sun. So how come the more northern Shetlands are less afflicted?