Check out these five interesting science facts.
1.Babies have around 100 more bones than adults.
Babies have about 300 bones at birth, with cartilage between many of them. This extra flexibility helps them pass through the birth canal and also allows for rapid growth. During growth, they fuse as 206 bones to get an adult form.
2.Polar bears are nearly undetectable by infrared cameras.
Thermal cameras detect the heat lost by a subject as infrared, but polar bears are experts at conserving heat. The bears keep warm due to a thick layer of blubber under the skin. Add to this a dense fur coat, and they can endure the chilliest Arctic day. So, they are not detected by infrared cameras.
3.You can’t taste food without saliva.
For food to have taste, chemicals from the food must first dissolve in saliva. It’s only once they’ve been dissolved in a liquid that the chemicals can be detected by receptors on taste buds. You can check this by tasting food after rubbing your tongue with a clean cloth.
4.Betelgeuse can blow at any time within a couple of thousand years
If Betelgeuse(the second brightest star in constellation Orion) exploded, transitioning from the red supergiant stage to supernova, it would light our sky continuously for two months. It could happen anytime — within a couple of thousand years, tomorrow, or even now.
5.An individual blood cell takes about 60 seconds to make a complete circuit of the body.
You have about 5 liters of blood in your body, and the average heart pumps about 70 mL of blood out with each beat. A healthy heart also beats around 70 times a minute. So, if you multiply the amount of blood that the heart can pump by the number of beats in a minute, you get about 4.9 liters of blood pumped per minute, which is almost your whole body’s worth of blood. In just a minute, the heart pumps the entire blood volume around your body.