Over time, most things lose their lustre — like these ancient seashells. But now, scientists are able to glimpse what the now-white shells looked like in their prime using UV light.
Fresh from this year’s Outdoor Retailer expo comes SteriPEN’s new Sidewinder portable water purifier. You can leave the batteries at home on your next trip, as the Sidewinder only needs a good cranking to power its germ-killing UV bulb.
Photochromic lenses that allow you to walk from inside to outside without putting on UV-filtering lenses have been around for decades. But the technology is just making its way to contacts.