Why Most Sunscreens Don’t Work
July 3, 2008
Why Most Sunscreens Don’t Work | Newsweek To Your Health | Newsweek.com
Sunscreens were seriously burned this month, when a new ranking of more than 700 sunscreen products found that 84 percent did not provide adequate sun protection. The study, conducted by Environmental Working Group (EWG), a Washington-based nonprofit, looked at over 400 peer-reviewed articles on sunscreen ingredients. It found that many of the most popular sunscreens break down quickly in the sun or are not blocking many harmful ultraviolet (UV) rays.
Rankings in the July 2007 issue of Consumer Reports revealed a similar problem: not all sunscreens are created equal. Rather, they found that sunscreens with the same sun protection factor (SPF) ran the gamut from “excellent” to “poor” in their overall ability to block ultraviolet rays.
While many people rely solely on SPF when selecting a sunscreen, these rankings show that the single number only tells half the story. SPF measures a sunscreen’s ability to block UVB rays. But it says nothing about its strength against UVA rays, an equally damaging form of radiation that causes wrinkles and, more seriously, skin cancer. And unlike UVB rays that cause sunburns, UVA rays do not leave an immediate mark.
The Coming Energy Wars
June 1, 2008
The Coming Energy Wars | Newsweek International Edition | Newsweek.com
Oil prices could hit $200 a barrel in the next few months. How the spike changes everything.
The Rise of the Rest
May 5, 2008
The Rise of the Rest
Look around. The world’s tallest building is in Taipei, and will soon be in Dubai. Its largest publicly traded company is in Beijing. Its biggest refinery is being constructed in India. Its largest passenger airplane is built in Europe. The largest investment fund on the planet is in Abu Dhabi; the biggest movie industry is Bollywood, not Hollywood. Once quintessentially American icons have been usurped by the natives. The largest Ferris wheel is in Singapore. The largest casino is in Macao, which overtook Las Vegas in gambling revenues last year. America no longer dominates even its favorite sport, shopping. The Mall of America in Minnesota once boasted that it was the largest shopping mall in the world. Today it wouldn’t make the top ten. In the most recent rankings, only two of the world’s ten richest people are American. These lists are arbitrary and a bit silly, but consider that only ten years ago, the United States would have serenely topped almost every one of these categories.
