Among cultures and through history, standards of beauty have changed considerably. At certain times, stoutness was a symbol of wealth and influence and thus was considered attractive. At other times, ...

In nature, most animals are extremely symmetrical in structure. In humans, birds, and mammals, the left and right sides are often almost indistinguishable, with the two halves of the body being ...

Osaka, Japan - On the outside, animals often appear bilaterally symmetrical with mirror-image left and right features. However, this balance is not always reflected internally, as several organs such ...