Science Facts for Kids
Mind-blowing science facts
The Sun is actually white, not yellow. It appears yellow from Earth because our atmosphere scatters the shorter blue wavelengths, making the remaining light look warmer.
CRISPR is a revolutionary gene-editing tool inspired by a natural defence system in bacteria. Scientists can use it to cut and modify DNA with extraordinary precision.
The eruption of Krakatoa in 1883 produced the loudest sound in recorded history, heard over 4,800 kilometres away — equivalent to hearing a sound from London in New York.
In physics, a 'jiffy' is an actual unit of time. It refers to the time it takes light to travel one centimetre — about 33.3 picoseconds.
Your skeleton is not permanent — almost all bone cells are replaced over about 10 years. By the time you are an adult, you have already had several entirely new skeletons.
Earth is the only known planet in the solar system where water naturally exists in all three states — solid ice, liquid water, and water vapour — on the surface at the same time.
If all the DNA in a single human cell were uncoiled and stretched out, it would be about 2 metres long. With around 37 trillion cells in the body, all your DNA would reach from Earth to the Sun and back over 600 times.
Nothing with mass can travel as fast as light. Einstein's theory of relativity shows that as an object approaches the speed of light, it would need an infinite amount of energy to accelerate further.
The periodic table organises all known chemical elements by their atomic number and properties. Dmitri Mendeleev, who created it in 1869, left gaps for undiscovered elements — and predicted their properties correctly.
Plants make their own food through photosynthesis — a process that converts sunlight, water, and carbon dioxide into glucose and releases oxygen as a by-product. Almost all life on Earth depends on it.