Which are rarer: diamonds or emeralds?
A diamond and emerald locket as soon as owned by Elizabeth Taylor on display screen at the Victoria and Albert Museum in London in 2014. Worldwide, which of these valuable…
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Which animals are evolving fastest?
More than 500 types of cichlids have actually developed in Africa’s Lake Victoria over the previous 15,000 years. (Image credit: JethuynhCan through Getty Images) Advancement takes place over centuries, however…
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