Most frogs are extremely vocal during the mating season, but the goliath frog is not. In fact, it has no vocal cords, despite having excellent hearing! During the breeding season, males will push rocks together into semi-circular nests where they will battle with other males to attract females. The females will lay strings of several hundred eggs attached to masses of a single aquatic plant on the river bed. Her tadpoles will feed only on this species of plant for the first three months of their lives before they metamorphose.
Oddly, considering the adult frog’s giant size, the eggs and tadpoles are no larger than those of other frogs when they are young, though they grow to be quite large as they approach metamorphosis!
The pyramids of Giza are some of the most recognisable archaeological sites in the world. The pyramid is estimated to be made from around 2,300,000 stone blocks, that weigh anywhere from 2 to 50 tonnes each. All built around 2580 and 2510 BCE, the Pyramids here amazingly all line up precisely, with the Constellation of Orion.
Despite the extreme heat that Egypt experiences, the temperature inside the Pyramid of Khufu (the largest of the three pyramids) remains a constant 20°C.