The view from the Gelmer Funicular in Switzerland…

Man in Indonesia captured exact moment a volcano erupted within its caldera…

Jon Call, built like a tank, moves like a ninja. [📹 jujimufu]…

Secret hidden bunker in the Swiss Alps.…

The menstrual cycle Menstrual phase (0:00 - 0:07) Follicular phase (0:08 - 0:15) Ovulation phase (0:16 - 0:27) Lutheal phase (0:28 - 0:33) [📹 design_cells]…

How a shield tunneling machine works…

Stunning ice formation…

An analysis of the American Airlines flight and Black Hawk helicopter crash over Potomac river. [🎞️ aitelly3d]…