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Why does vinegar dissolve pearls
First-century historian Pliny popularized the idea of vinegar "melting" a pearl when he told the tale of Cleopatra dropping a large, expensive pearl earring into a goblet of wine vinegar to win a bet with Mark Antony. A chemical reaction will indeed dissolve a pearl. Pearl Composition Pearls are made of substance called nacre, which is secreted by oysters to coat an irritant, such as a lodged grain of sand. Nacre is a calcium carbonate, according to the Null Hypothesis website.
Yes, today's the day where all that hype finally hits its climax and legions of diehard fanboys are rejoicing the fact they can now see Liverpool on the EPL table, without scrolling down the screen of their fruity smartphone. But, today, I'd much rather put the focus on something which I strongly believe is more worthy of the hype. The cover of the latest issue of Forbes Magazine features 12 " Titans of Philanthropy " who, together, have a net worth of US$126 billion. The portrait was shot to mark its first-ever Forbes 400 Summit on Philanthropy on Jun. 26, which gathered 161 billionaires who have dedicated time and resources toward solving the world's problems. The dazzling dozen included Bill and Melinda Gates, Marc Benioff, Steve Case, Oprah Winfrey, Warren Buffett, and Jon Bon Jovi.
The hype that really matters
'Leap second' adds extra moment for first time since 2008
CTVNews.ca Staff Published Friday, Jun. 29, 2012 11:01AM EDT Last Updated Friday, Jun. 29, 2012 10:44PM EDT The Canada Day long weekend just got a little longer – only by one second unfortunately.
Who's Who scam
A Who's Who scam is a fraudulent Who's Who biographical directory. [ 1 ] While there are many legitimate Who's Who directories, Who's Who scams involve the selling of "memberships" in fraudulent directories that are created online or through instant publishing services. [ 1 ] These fraudulent directories represent thinly veiled moneymaking scams . A scam may begin with a telephone interview or online questionnaire to validate a potential target's personal information. This information can be included in the fraudulent directory, sold to other marketing firms, or used in future attacks such as phishing emails. Once the personal information has been gathered, the target is congratulated as having passed the interview and is asked to provide a credit card number to finalize the process. Upon further inquiry, the target may be told that a credit card payment is required to receive a certificate and copy of the directory.The Scale of the Universe
Thanks for sharing....people really seem to be facinated, thanks! by May 2
Brain scans support findings that IQ can rise or fall significantly during adolescence
Oct. 22, 2011 — IQ, the standard measure of intelligence, can increase or fall significantly during our teenage years, according to research funded by the Wellcome Trust, and these changes are associated with changes to the structure of our brains. The findings may have implications for testing and streaming of children during their school years. Across our lifetime, our intellectual ability is considered to be stable, with intelligence quotient (IQ) scores taken at one point in time used to predict educational achievement and employment prospects later in life.
