The future of flight is now

Many experts agree the future of flight will rely on zero-emission and/or renewable energy technology. That is, aircraft will be propelled by ions—electrically charged molecules—that create thrust in their wake.

A marine creature's magic trick explained

Tiny ocean creatures known as sea sapphires perform a sort of magic trick as they swim: One second they appear in splendid iridescent shades of blue, purple or green, and the next they may turn invisible (at least the blue ...

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