Air Travel

25 Amazing and Unknown Facts about Air Travel | Amazing Facts 4U KLM is the worlds’ oldest airline established in 1919. QANTAS is the second established in 1920. The …

Amazon River

25 Amazing and Unknown Facts about Amazon River | Amazing Facts 4U  The length of the Amazon River is approximately 6400 kilometers (4000 miles). It is the second-largest river …

Pregnancy

50 Amazing and Interesting Facts About Pregnancy | Amazing Facts 4U The amazing fact is that Rabbits, dogs, pigs, whales, and humans all start as eggs roughly the same size …

X-Ray

40 Amazing and Interesting Facts about X-Ray | Amazing Facts 4U X-rays were discovered by accident when German scientist Wilhelm Conrad Roentgen (1845–1923) was experimenting with vacuum tubes in 1895. …

Jupiter

35 Amazing and Interesting Facts about Jupiter | Amazing Facts 4U  Jupiter is massive having 318 times the mass of the Earth. It would take 11 Earths lined up next …

Kidney

30 Amazing and Interesting Facts about Kidneys | Amazing Facts 4U Kidneys measure around 12 cm in length about size of a computer mouse. They are shaped like beans. Each …