Octopuses are fascinating creatures with a truly unique circulatory system they have three hearts and blue blood. Two of their hearts pump blood to the gills, where it picks up oxygen, while the third heart pumps the oxygenated blood to the rest of the body. Interestingly, when an octopus swims, the heart that sends blood to the body temporarily st

Although the human brain only makes up about 2% of our body weight, it consumes around 20% of the body’s total energy. This energy is used to power billions of neurons that are constantly communicating with each other, even while we sleep. The brain relies mainly on glucose (a type of sugar) for fuel, and its energy demand supports all kinds of m

Antarctica is the southernmost continent on Earth and is known as the coldest, driest, and windiest place on the planet. Temperatures can drop below -80°C (-112°F) during winter, and even in summer, it rarely rises above freezing. The continent is covered by a massive ice sheet that contains about 70% of the world’s fresh water, making it cruci

Lightning is a powerful natural phenomenon that occurs when electrical charges build up in storm clouds and are released in a sudden burst. This discharge creates a flash of light and a shockwave we hear as thunder. What’s truly fascinating is that lightning strikes the Earth about 100 times every second, amounting to roughly 8.6 million strikes