Eiffel Tower can be 15 cm taller in summer. As we know that metals expand during the summer and contract during winter.
20% of the total world’s oxygen is produced by the Amazon rainforests. As we know that Oxygen is produced by plants. And Amazon covers about 5.5 million square kilometers of earth. And Amazon also absorbs a large quantity of carbon dioxide.
Some metals are so reactive that they can explode when they make contact with water. Some of the Alkali metals do so. As sodium, potassium, and Lithium can explode when they are dropped in water.
A tablespoon of a neutron star would weigh six billion tons. A neutron star is the remnants of a massive star that has run out of fuel. A neutron star is very dense and that’s why it’s very heavy.
Stomach acid is strong enough to dissolve stainless steel. As HCl has a pH of 2 to 3. That’s very acidic and can dissolve stainless steel.
Venus is the only planet in the solar system that moves clockwise. All the other 7 planets move anticlockwise around the sun.
There is enough DNA in the average person’s body to stretch from the sun to Pluto and back — 17 times.
An individual blood cell takes about 60 seconds to make a complete circuit of the body.
Octopuses have three hearts, nine brains, and blue blood.
Hot water freezes quickly than that of cold water and similarly cold water boils faster than that of hot water.