Funny Science Facts part 2

• Oxygen is the most abundant element in the Earth's crust, waters, and atmosphere (about 49.5%)
• A stroke of lightning discharges from 10 to 100 million volts & 30,000 amperes of electricity.
• A bolt of lightning is about 54,000°F (30,000°C); six times hotter than the Sun.
• Hydrogen is the most abundant element in the Universe (75%).
• The average distance between the Earth & the Moon is 238,857 miles (384,392 km).
• The moon is 27% the size of the Earth.
• The Earth weighs 6.6 sextillion tons, or 5.97 x 1024 kg.
• The center of the Sun is about 27 million degrees Fahrenheit (15 million °C).
• Sunlight takes about 8 minutes & 20 seconds to reach the Earth at 186,282 miles/sec (299,792 Km/sec).
• The highest temperature on Earth was 136°F (58°C) in Libya in 1922.
• The lowest temperature on Earth was -128.6°F (-89.6°C) in Antarctica in 1983.
• Sunlight can penetrate clean ocean water to a depth of 240 feet.
• The average ocean floor is 12,000 feet.
• The temperature can be determined by counting the number of cricket chirps in fourteen seconds and adding 40.
• House flies have a lifespan of two weeks.
• Chimps are the only animals that can recognize themselves in a mirror.
• Starfish don't have brains.
• The average person falls asleep in seven minutes.
• Shrimp's hearts are in their heads.
• Every time you lick a stamp, you're consuming 1/10 of a calorie.
• The longest recorded flight of a chicken is thirteen seconds
• Emus and kangaroos cannot walk backwards.
• Cats have over one hundred vocal sounds, while dogs only have about ten.
• Porcupines float in water.
• An ostrich's eye is bigger that its brain.
• An iguana can stay under water for twenty-eight minutes.
• The common goldfish is the only animal that can see both infra-red and ultra-violet light.
• It's impossible to sneeze with your eyes open.
• The pupil of an octopus' eye is rectangular.
• Our eyes are always the same size from birth, but our nose and ears never stop growing.
• The leg bones of a bat are so thin that no bat can walk.
• Ants cannot chew their food, they move their jaws sideways, like scissors, to extract the juices from the food.
• Hummingbirds are the only animals able to fly backwards.
• A cat has 32 muscles in each ear.
• Tigers have striped skin, not just striped fur.
• A cat's jaws cannot move sideways.
• Armadillos get an average of 18.5 hours of sleep per day.
• Armadillos can walk underwater.
• There are more beetles than any other kind of creature in the world.
• Certain frogs that can survive the experience of being frozen.
• Only humans sleep on their backs.
• The human brain is 80% water.
• Everyone's tongue print is different.
• As an adult, you have more than 20 square feet of skin on your body--about the same square footage as a blanket for a queen-sized bed.
• In your lifetime, you'll shed over 40 pounds of skin.
• 15 million blood cells are produced and destroyed in the human body every second.
• Every minute, 30-40,000 dead skin cells fall from your body.
• The brain uses more than 25% of the oxygen used by the human body.
• If your mouth was completely dry, you would not be able to distinguish the taste of anything.
• There are more living organisms on the skin of a single human being than there are human beings on the surface of the earth.
• Muscles are made up of bundles from about 5 in the eyelid to about 200 in the buttock muscle.
• Muscles in the human body (640 in total) make up about half of the body weight.
• The human body has enough fat to produce 7 bars of soap.
• The human head is a quarter of our total length at birth, but only an eighth of our total length by the time we reach adulthood.
• Most people blink about 17,000 times a day.
• Moths have no stomach.
• Hummingbirds can't walk.
• Sea otters have 2 coats of fur.
• A starfish can turn its stomach inside out.
• A zebra is white with black stripes.
• The animal with the largest brain in relation to its body is the ant.
• The largest eggs in the world are laid by a shark.
• A crocodile's tongue is attached to the roof of its mouth.
• Crocodiles swallow stones to help them dive deeper.
• Giraffes are unable to cough.
• Sharks are immune to cancer.
• Despite the hump, a camel's spine is straight.
• Cheetah's can accelerate from 0 to 70 km/h in 3 seconds.
• A giraffe's neck contains the same number of vertebrae as a human.
• The heart of giraffe is two feet long, and can weigh as much as twenty four pounds.
• On average, Elephants sleep for about 2 hours per day.
• Lobsters have blue blood.
• Shark's teeth are literally as hard as steel.
• A mosquito has 47 teeth.
• Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
• Seventy percent of the dust in your home consists of shed human skin
• Fish are the only vertebrates that outnumber birds.
• A cockroach can live for several weeks without its head.
• The average human produces a quart of saliva a day -- about 10,000 gallons in a lifetime
• Elephants have been known to remain standing after they die.
• The embryos of tiger sharks fight each other while in their mother's womb, the survivor being the baby shark that is born.
• Ants do not sleep.
• Nearly a third of all bottled drinking water purchased in the US is contaminated with bacteria.
• Rats multiply so quickly that in 18 months, two rats could have over 1 million descendents.
• An Astronaut can be up to 2 inches taller returning from space. The cartilage disks in the spine expand in the absence of gravity.
• The oldest known fossil is of a single-celled organism, blue-green algae, found in 3.2 billion year-old stones in South Africa.
• The oldest multicellular fossils date from ~700 million years ago.
• The earliest cockroach fossils are about 280 million years old.
• Healthy nails grow about 2 cm each year. Fingernails grow four times as fast as toenails.
• 20/20 vision means the eye can see normally at 20 feet. 20/15 is better; the eye can see at 20 feet what another eye sees at 15 feet.
• The average person has 100,000 hairs on his/her head. Each hair grows about 5 inches (12.7 cm) every year.
• There are 60,000 miles (97,000 km) in blood vessels in every human.