Hearing
Unlike light waves, sound waves do not travel in a vacuum, as in outer space….
Vision
The eye is literally our window on the world. Through this amazing adaptation, we are…
Strange Beasts: Sea Angel
Sea angels (clade Gymnosomata) are a large group of extremely small, swimming sea slugs. They are found…
Lichen
The colorful growths appearing on some rock surfaces are living organisms composed of a fungus…
Leonardo da Vinci
Leonardo da Vinci was an Italian renaissance painter, sculptor, architect, inventor, military engineer and draftsman….
Many Trees Have Self-Defense Strategies
Leaves of the Acacia trees (primarily native to Australia and Africa) are eaten by giraffes…
