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Paroxysmal Nocturnal Dyspnea
health.howstuffworks.com/diseases-conditions/respiratory/paroxysmal-nocturnal-dyspnea.htm
Paroxysmal nocturnal dyspnea is a sign of heart failure that makes people have trouble breathing while lying down. Learn about paroxysmal nocturnal dyspnea.
Why are orca called killer whales?
animals.howstuffworks.com/mammals/orca-killer-whale.htm
People love to swim with them so why are orca called killer whales? Find out why orca are called killer whales and whether an orca is a whale.
Are UFOs Real? Close Encounters of the First, Second and Third Kinds
science.howstuffworks.com/space/aliens-ufos/ufo-classification.htm
UFO siting classification Classification has six categories: nocturnal lights, daylight discs, radar/visual cases, and close encounters. Read more about UFO classification.
How does the aging process affect driving ability?
health.howstuffworks.com/wellness/aging/aging-process/age-and-driving.htm
Elderly drivers can suffer from vision deterioration and slowed reaction times. Find out how age affects safe driving and how to recognize the danger signs.
Why are eels slippery?
animals.howstuffworks.com/marine-life/eels-slippery.htm
Eel skin is slippery for a reason. The slime layer helps it to slither through tight spaces and protects it from parasites. Learn why eels are slippery.
How can an octopus make itself look like another animal?
animals.howstuffworks.com/marine-life/octopus-camouflage.htm
Octopus camouflage is essential to survival in the depths of the ocean. Learn how octopus camouflage wards against predators like sharks and rays.
Why hire a contractor if subcontractors do all the work?
home.howstuffworks.com/home-improvement/construction/planning/why-hire-a-contractor.htm
Why hire a contractor if subcontractors do all the work? Find out the answer to this question and more related to contractors vs subcontractors.
How to Volunteer to Help Disabled Veterans
money.howstuffworks.com/economics/volunteer/opportunities/volunteer-to-help-disabled-veterans.htm
Would you like to volunteer to help disabled veterans? Visit HowStuffWorks to learn how to volunteer to help disabled veterans.
Why do cougars scream?
animals.howstuffworks.com/mammals/cougar-scream.htm
Cougars scream during mating season to attract the opposite sex. Learn how cougars scream and why humans don't hear these cougar screams too often.
How Blackouts Work
science.howstuffworks.com/environmental/energy/blackout.htm
Blackouts are explained in this article. Learn about blackouts.