A dark and cloudy day will, by definition, block out some sunshine, but our research all concludes that many of those skin-damaging rays can still filter through.

The U.S. Food and Drug Administration (FDA) recommends limiting sun exposure “especially between 10 a.m. and 2 p.m., when the sun’s rays are most intense,” covering up with clothing, hats ...

An overabundance of antimatter in showers of charged particles that bombard Earth called cosmic rays could reveal the secrets of dark matter, the universe's most mysterious "stuff," a new study ...

A complete survey of all the particle and antiparticle activity that goes on during the Sun’s 11-year cycle has found previously unknown ways these particles behave. Cosmic rays coming from ...

Both UVA and UVB rays can damage your skin, just in different ways. One causes premature aging, the other is more prone to causing sunburn, DNA damage, and skin cancer.

Wear sunglasses that: Have dark lenses, completely cover your eyes and eyelids, and block 99% of UVB and UVA rays. Other ways you can outsmart the sun? Consider contact lenses with UV protection.