The safety match was invented by Gustaf Erik Pasch (in the year 1844). It was later improved by Johan Edvard Lundström.
Cobalt-60 is an artificial radioactive isotope of cobalt used for sterilizing surgical instruments.
Photoelectric effect was discovered by Heinrich Hertz and Wilhelm Hallwachs in the year 1887.
Sheep can recognize individual human and sheep faces, and remember them for years.
Silumin is an alloy of aluminium and silicon used for casting purposes.
Molten lava is up to 100,000 times as viscous as water.
An acre of rich fertile farmland may contain up to 1,750,000 earthworms.
The first colour photograph was created by the Scottish physicist James Clerk Maxwell, with the help of the English photographer Thomas Sutton, in the year 1861.
Capybara is the largest living rodent in the world.
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