Although fuel consumption varies not only by type of aircraft but by factors like speed, headwinds, and cargo weight, a 747 jet uses about 1 gallon of fuel every SECOND. However, the plane can carry so many people that really it’s as if it’s getting 100 miles per gallon for every person. Of course, you can fit more than one person in a car, too, so how are you supposed to figure out if it makes more sense to drive or fly?
For a detailed explanation, check out howstuffworks and the links it suggests.
The average square centimeter of your skin is home to about 50,000,000 bacteria. I know, I know…ew. Fortunately, most of them can’t hurt us. Want to know what’s even more gross? Other microorganisms, like mites and lice, make their homes on our bodies as well. Our bodies are like mini-Earths, with different habitats that house different creatures. Which areas of our bodies do you think house the most bacteria?
Beetles make up about 40% of known insects, with approximately 400,000 species. Some scientists estimate that the known species may be as small as 5% of all actual existing species. New ones are being discovered all the time! Beetles are so diverse that there are kinds that eat carrion, fungus, plants, flowers, fruits, etc. You can find them all over the world in just about every habitat.
60,000 miles? That’s a lot of blood vessels! Of course, the exact length would vary according to the size of the person. Think about how far our blood must travel through these blood vessels, day after day! Your body has three types of blood vessels:
Arteries–carry blood away from the heart
Veins–Carry blood to the heart
Capillaries–exchange water and chemicals between blood and tissues
Louis Cartier invented the first men’s wristwatch in 1904. An earlier version of a wristwatch had been created for women, but they were not used in mainstream society. Cartier’s wristwatch came about because of a pilot friend who needed an easy way to keep time while in flight, since you can’t keep your hands on the controls while you are fishing a watch out of your pocket! The wristwatch gained popularity after WWI when returned soldiers wore them out and about. The first digital wristwatch went on sale in late 1969, created by the Seiko company.
Yes, the U.S. uses about 1/4 of the world’s power, which is kind of sad, considering we have less than 5% of the world’s population. No wonder we need to explore renewable energy sources! Most people get the majority of their energy from oil, and we are using it much faster than the Earth is producing it. What do you think would be the best alternative? Solar power? Hydro? Wind? Biofuel? Leave us a comment and tell us what you think!
How can a mating ritual tell you the temperature? Ask a cricket!
The timing of cricket chirps can tell you the outside temperature, and they are fairly accurate until it’s below around 55 degrees (crickets aren’t really active when it’s that cold).
For the temperature in Fahrenheit, count the number of chirps in 14 seconds and add 40. For Celsius, count the number of chirps in 25 seconds, divide by three, then add four. Male crickets are the ones chirping, as they are trying to lure females. Crickets chirp faster the warmer it is, but there’s no word on whether the ladies care what temperature it is!