Typical household paint contains up to 10,000 chemicals, of which 300 are known toxins and 150 have been linked to cancer.
Roller coasters do not have engines, the conversion of potential energy to kinetic energy is what drives the roller coaster.
Sharks do not have a single bone in their bodies. Instead they have a skeleton made up of cartilage; the same type of tough, flexible tissue that makes up human ears and noses.
A cloud’s weight is spread out over a very large area. Plus, the cloud’s droplets and ice crystals are very small–about one micron. A cloud’s individual particles are so small, in fact, that warm air rising from the earth’s surface is able to keep them floating in the air. But clouds don’t stay up in the air forever, when the warm air keeping clouds afloat cools, its water vapor condenses, and adds to the cloud’s droplets. At a certain point the droplets become heavy enough to overwhelm the force of the rising air, and all that water falls to the ground giving us the rain.
If the water droplets and ice crystals that forms a cloud weigh just about 500 cars, how come a cloud floats in the sky?
A diamond does not melt in acid. The only thing that can melt a diamond is the intense heat.
Because of the Earth’s shape, the furthest away you can be from the center of the Earth while still being on land is a dormant volcano in Ecuador. It’s called Mount Chimborazo. Not the Everest!
Blushing is a uniquely human reaction. Babies don’t blush. It’s something they have to learn.
There is a hole on the top of the pen lid to prevent children suffocating if they accidently stuck the lid into their throat. Subsequently this provides an air passage in such a case. Furthermore when the lid is closed this hole equalize the air pressure inside the lid to the atmospheric pressure therefore it is easy to open the lid.
Why do most of the pen lids have a small hole in the top?
During your lifetime, you’ll eat about 60,000 pounds of food, that’s the weight of about 6 elephants!
In the human body cells the content of water is higher than salt water. If we drink salt water it dehydrate our body cells which could lead us to death. But in the sea, fish use metabolic energy (ATP) to actively excrete salt through the gills and kidneys this prevents them from dehydration.
If we drink much salt water it causes death. But in the sea, fish always drink salt water. But won’t die. Why?
Just one atomic layer thick, Graphene (a crystalline form of carbon) is a better conductor of electricity and heat than any material.
Warming rates of Greenland deep sea water is 10 times higher than that of calculated rates for the ocean warming.
When you are in the back seat of the car you don’t get a good view of the moving environment outside. This makes your eyes believe that you are still. But the balance mechanism in your ear makes you feel that you are moving. The disagreement between what you feel and what you see is the main reason causing travelling sickness when you are in the back seat. Furthermore the more shaking in the back seat could also affect getting more travelling sickness at the back.
Chewing gum is largely indigestible, but it will make its way through digestive system at the same rate as anything else you consume.
Why do some people get more travelling sickness when travelling in the back seat?
Ants lay down pheromones as they walk back to their nest after a meal. These scented trails signal “good eats” to other ants. Meanwhile, a different pheromone might tell wanderers to turn back, because there’s no food ahead.
Just as the gravity of the moon pulls up a tidal bulge in the Earth’s liquid ocean, the Earth can cause a tidal bulge in the Sun’s fluid plasma.
We have a biological clock in our brain which reminds us time to wake up, sleep and eat. Scientists have discovered that even a short nap can reset the biological clock.