The coast around Benagil, Portugal, is made up of Miocene limestone sitting on much older rocks created in the Mesozoic. Over time, the limestone built up, with the layers that
Circus Maximus now vs then Conceived as a chariot-racing stadium and mass entertainment venue in Ancient Rome, it measured 621 m (2,037 ft) in length and 118 m
Stunning blue jet filmed over the Bay of Bengal. Like red sprites, they are a rarely seen form of lightning that occur in the upper atmosphere, above a thunderstorm or
