article_snippet.sent: Sun exposures were measured in San Jose, California, and in Las Vegas around midday in April.
article_snippet.sent: Sun exposures then compared Sun exposures with measurements taken in tanning beds.
article_snippet.sent: While short-wave UV-B ultraviolet radiation cannot easily penetrate glass and plastic windows, long-wave UV-A is much more likely to get through.
article_snippet.sent: Both kinds of UV can cause skin ageing and cancer.