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(PhysOrg.com) -- In a paper published in the US journal Optical Materials Express this week, Macquarie University researchers show that even the earth's hardest naturally occurring material, the diamond, is not forever.

Meet up with friends! Watch funny YouTube videos! Oh yeah, also, prep for the LSATs... A couple years back, Ashish Rangnekar was preparing for his GMAT exam, while also working a full-time job. "I realized that I was always short of time