For people with low visibility, a magnifying glass isn’t effective enough. You need an extra lighting feature to improve their visibility. Moreover, a good lighting system is also useful to illuminate ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The number of ...

That said, we couldn’t tell any difference between Eagle Creek’s zippers and other brands’ YKK zippers, even with a magnifying glass, and their performance was indistinguishable. For what it ...