A German airplane over the Pyramids of Giza in Egypt, WWI

Most polluted cities are mostly indian

🇬🇧 The Royal Exchange, London 1905 (photochrome)

They're back: the same spinners, only now flying.

A security guard risks his life to save calm zoo visitors from a hippopotamus unaware of the danger.

Children from the Łódź Ghetto rounded up for deportation to the Chełmno death camp, September 1942

A 100-year-old drawing device, the camera lucida.

It was used by artists to check perspective and maximise likeness.

The royal bird of paradise (lat. Cicinnurus regius) is one of the most colorful and memorable birds in its family.

Syrian camel drivers, 1895. Photochrome

In anger, the cloaked lizard begins to make terrible hissing noises and, in addition, severely beats the offender with its tail.

Dmitry Donskoy in the Battle of Kulikovo, 8 September 1380. This battle was fought between the Mongols and Grand Prince Dimitry Of Moscow and ended in a Russian victory. Although the victory did not end Mongol domination over Russia, it is traditionally regarded as the turning point at which Mongol influence began to wane and Moscow's power began to rise.

🔥 Sun Tzu, "The Art of War"

The clever crow got rid of the rival vultures with just one pinch, strangling each other.