Month: September 2021

The remarkable story of the battle to save the ozone layer starts with science. In the mid-1970s, scientists warned that man-made chemicals in everyday products like aerosols, foams, refrigerators and air-conditioners were harming the ozone layer. At that time, they didn’t know the scale of the problem. But in 1985, a hole was confirmed in the ozone layer over Antarctica. The world’s natural sun shield, which protects humans, plants, animals and ecosystems from excessive ultraviolet …

Active noise cancellation is an increasingly common feature of wire-free earphones. If you want to block out the world around you, check out the best noise-cancelling wireless earbuds…