Our world is full of the unexplainable.

And if history is an open book, all of these amazing tales are right there on display,

just waiting for us to explore.

Welcome to the Cabinet of Curiosity's.

The conclusion is nature's way of upgrading biological hardware so animals can continue

to thrive in a changing environment.

When swallows in Nebraska, southern nests blown off cliff faces during storms, they started

building them on highways and bridges instead.

Unfortunately, passing cars and trucks would flatten them before the birds had a chance

to escape.

Nature's answer?

Shorter wings.

The cliff swallows wings eventually shrunk by a few millimeters to make its liftoffs

faster, allowing it to escape imminent death from oncoming traffic.

African elephants have also changed, but not due to cars.

Poachers have decimated the elephant populations in some areas in pursuit of their tusks.

Those tusks are used by the males to fight off competition when looking for a mate, but

because the long-tust elephants have been hunted to near extinction, short-tust elephants

have prospered.

How so?

They're passing down their genes to their offspring, many of which will grow up to not

have tusks at all.

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