Olympic Gold Medals Are Actually 92.5% Silver.

If Olympic gold medals aren’t gold, then what are they? Gold medals these days are not made of solid gold, they are actually made of silver! The last Olympic gold medal that was actually...

The world’s smallest oldest surviving ecosystem.

A garden in a huge bottle, planted by David Latimerin in 1960 was last watered in the year 1972 before it was tightly sealed.this maybe perhaps the smallest oldest surviving ecosystem in the world....