These animals are becoming increasingly scarce in the world.
The great dome at Hagia Sophia was the largest hanging dome in the world until the completion of St. Peter's Basilica in Rome.
Although they are listed as least concerned by the IUCN Red List, black caimans once were hunted to the brink of extinction.
Ojos del Salado is part of the High Andes.
Most of glass frogs skin colors is lime to olive green.
They primarily feed on fish, but also on crabs, crayfish, and frogs.
The breeding season of kiwi birds lasts from late winter to early summer.
They are large wading birds reaching a body length of 120 to 145 cm.
Wildcats can live up to 10 years in the wild.
The surface of Phobos is covered with streaks and ditches approximately 30 meters deep, 200 meters wide, and up to 20 km long.
Hagia Sophia was built between 532 and 537 as the largest Christian church of the Eastern Roman Empire (Byzantine Empire) and the Eastern Orthodox Church.
Fidel Castro - the symbol of Cuba - died on November 26, 2016.
Sundiata Kaita died in 1255, probably by drowning.
The lake is loosing 80% of water due to evaporation.
Alligator snapping turtle
Its jaws have a bite force of approximately 455 kg, so can easily go through bones.
The Siberian roe deer are nocturnal.
He lived from 1899 to 1961.
The northern pike is olive-green in color, with a yellow or white tint running along the belly.
It is made of red sandstone and covered with white marble.
The first European to visit Lake Baikal was Cossack, Kurbat Ivanov in 1643.