The world record for the longest echo in a man-made structure has been set in an underground fuel depot constructed near Invergordon, Scotland before World War Two. The time for the reverberation to end was 75 seconds.
Tokelau, a group of remote islands in the Pacific Ocean, receives 100 percent of its electricity from solar energy since 2012.
An 11-year-old girl from England is credited with naming Pluto in 1930.
Green eyes, found in only 2 percent of the population, are more common in females than males, and among celebrities than the general public.
The heart is so strong it can squirt blood up to 9 metres.
Uranus only has two seasons - summer and winter. Each lasts 42 Earth years.
If the Earth were the size of a grain of sand, the sun would be the size of an orange.