On your weather app, you may see a measurement called the UV index. This is a powerful tool that can let you know how to ...

"Every exposure to UV, especially every sunburn, increases our risk of skin cancer," says Prof Dorothy Bennett, from St George's, University of London. "Melanoma, the most dangerous skin cancer, is ...

When you check the weather, you might see something called the UV Index listed alongside the temperature and forecast. But what exactly is it, and why should you pay attention to it? Let’s break it ...

Most of us glance at the UV index, see a number, and think "okay, high, got it, maybe put on sunscreen." But there's actually a lot more going on behind that number than the app lets on. The UV index ...

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Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. We get sunlight every ...

If you're hoping to get a tan (especially during the summer), you might want to know the best level of exposure to UV radiation to do so. However, it doesn't exist. "There is no good UV index for ...

Some people use the UV index to determine the best time to tan, believing that a higher index signals a better chance of tanning. However, this harmful trend misunderstands the UV index. The UV index ...

You’ve probably seen the UV index in the day’s weather forecast, and you know it tells you when you need to cover up and wear sunscreen. But where does that number come from? We produce it at the ...

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 ...

You've probably seen the UV index in the day's weather forecast, and you know it tells you when you need to cover up and wear sunscreen. But where does that number come from? We produce it at the ...