There's No Such Thing as a Safe Suntan
Every time you step outdoors, you are bombarded by ultraviolet (UV) radiation from the sun. UV rays cause the number of free radicals in cells to increase. Free radicals are atoms or molecules that contain oxygen in a highly reactive form. They are the same…
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More science facts
Mathematics
Who Invented Zero?
Many concepts that we all take for granted sounded strange and foreign when first introduced. Take the number…
Biology
Why Are Yawns Contagious?
Lots of animals yawn. It's a primitive reflex. Humans even begin to yawn before birth, starting about 11 weeks…
Physics
Your Serve
NASA is well known for developing technology that makes things better, so can you believe that NASA actually…
Geology
Devils Postpile National Monument
Established in 1911 by presidential proclamation, Devils Postpile National Monument protects and preserves the…