The Eiffel Tower can be 15 cm taller during the summer. This is due to thermal expansion; particles move more and it takes up a larger volume. Large structures such as the Eiffel Tower have some leeway to expand and contract.

Newborn megalodon sharks were larger than most adult humans. Megalodon is an extinct species of shark that lived approximately 23 to 3.6 million years ago.

A medium-sized cumulus cloud weighs about the same as 80 elephants.

The average human body carries 10 times more bacterial cells than its own cells. Most are “good” bacteria that have a mutual relationship with human systems.

Vultures poop on their feet, using the bacteria in their waste to fend off the germs in their meals.

The rocks in Bowman Lake (Montana, USA) are caused by the presence of iron. The different levels of iron in each rock result in their multicolored nature.

According to the Natural History Museum, 503 new species of animals and plants were identified in 2020.

Water can boil and freeze at the same time; the temperature at which this occurs is called the triple point.

Oftentimes people with amputated arms or legs experience sensations from “phantom limb syndrome” where they can sense that the missing limb is still attached. This is known to be extremely painful.

Seahorse and Sea dragons are the only species in which the male gets pregnant and gives birth to young.

The Dead Sea has an unusually high concentration of salts, creating a natural buoyancy; anyone can easily float on the surface of the water because of the difference in densities.

Trichotillomania (hair-pulling disorder), is a mental disorder that involves constant hair-pulling urges from the scalp and eyebrows. Associated with Trichotillomania is Trichophagia (hair-eating disorder) which is a constant urge to pull and ingest hair.

The Stegosaurus dinosaur measured up to 30 feet long but had a brain the size of a walnut.

There is enough DNA in an average human body to stretch from the sun to Pluto and back 17 times. In other words, the length of total DNA across all cells is twice the diameter of the Solar System.

Octopuses have nine brains and three hearts.

Botox is a toxin made by the bacteria, Clostridium botulinum, and can cause serious paralysis in large amounts.

Many marine animals use the Earth’s magnetic field for navigation.

After mating, male drone bees’ testicles fatally explode.

One of the main contributors to antibiotic resistance is the failure to complete the full prescribed medication.