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www.reference.com/article/possible-fly-2facbc46550d1c75

Human flight is possible, but only with the help of technology. No matter how fast a person flaps her arms, the human body is not capable of flight without the additional lift provided by synthetic wings or propulsion systems, like jet packs or squirrel suits.

www.reference.com/world-view/things-fly-air-67691ad7c279f6f1

Aircraft is the term for a machine of any type or size that flies through the air. Aircraft include gliders, hot air balloons, aerial drones and passenger jets.

www.reference.com/article/fastest-flying-animal-386442470277e239

The peregrine falcon, or Falco peregrinus, is the fastest bird and the fastest member of the animal kingdom. When swooping or diving, it reaches speeds of up to 200 miles per hour. It is native to North America and historically known as the duck hawk.

www.reference.com/article/can-chickens-fly-17191a0a0286da8a

Whether or not a domestic chicken can fly generally depends of the weight of the particular bird, according to the University of Illinois Extension. Heavier chickens do not have the ability to fly, while lighter birds can often fly a short distance.

www.reference.com/article/can-birds-fly-e195f8ed2d82e0c1

Despite having wings, not all birds can fly. There are several types of flightless birds, including the penguin, kiwi, moa, weka and kakapo. Kiwis for Kiwi, an independent charity that protects the kiwi populations in New Zealand, states that there are more species of flightless birds in New Zealand

www.reference.com/article/spanish-fly-c302909657dbb8a1

Spanish fly is the common name for a type of beetle in the Melodiae family, also known as the blister beetle. Spanish fly is best known for its reputed aphrodisiac and medicinal properties; however, the active ingredient in Spanish fly, cantharidin, causes poisoning.

www.reference.com/article/fly-hooks-512f1399223977ba

A fly hook is any one of a great number of hand or machine-made hooks and lures intended for use in fly fishing and therefore equipped to resemble the insects, such as flies, on which fish feed. These hooks are generally considered advanced equipment used primarily by professionals and experienced a

www.reference.com/article/common-fears-7e65f92415c83510

Common fears include flying, public places, heights, spiders, dogs and blood. While many people face their fears and overcome them, others live life paralyzed by their fears.

www.reference.com/article/common-fears-people-9c13af57ce1cecb0

Common fear that people experience include arachnophobia, the fear of spiders; acrophobia, the fear of heights; claustrophobia, the fear of close spaces; and mysophobia, the fear of germs, notes Everyday Health. People with such fears know they exist, but are often unable to cope or rid themselves o

www.reference.com/pets-animals/life-cycle-fly-abb23752199005a8

The life cycle of a fly includes an egg, larva, pupa and adult. A fly completes its life cycle in 1 week to 2 months, depending on environmental conditions.