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.
There is very little evidence that sunscreen reduces melanoma in dark-skinned people.
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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.
To pollinators, which can see in the ultraviolet, sunflowers have an additional range of colours.
(Unsplash/Marco de Hevia)
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.
Institutions like hospitals and transit systems have been using UV disinfection for years.
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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.
While some things glow all the time, glow-in-the-dark paint must be ‘told to glow’ - just like a phone needs to be charged or it won’t work.
Mai Lam/The Conversation NY-BD-CC
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.
Don’t skimp on the SPF.
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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.
Former President Jimmy Carter in Aug., 2015 at Maranatha Baptist Church in Plains, Ga. Carter was undergoing treatment for advanced melanoma at the time. Via AP.
David Goldman/AP
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.