- The saltwater crocodile is the largest living reptile in the world.
- Stars account for 98% of the matter in a galaxy.
- Meninges is a system of membranes that encloses the brain and the spinal cord.
- The axial tilt of the Earth is nearly equal to 23.4°.
- The African bush elephant is the largest living terrestrial animal in the world.
- The concept of atomic number was first proposed by Henry Moseley.
- Hardness of a substance is measured by using Mho's scale.
- Safety Pin was invented by Walter Hunt in 1849.
- The estimated mass of the Earth is 5,940,000,000,000,000,000,000 metric tons.
- The Orangutan is the largest tree-dwelling mammal in the world.
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