Nature sure made some awesome, and awesomely large, predators back in the day. You had your tyrannosaurus rex, megalodon shark, your sabertooth tiger, and even your marsupial lion in Australia, complete with pouch.

Not to be outdone, birds had their own pants-shittingly scary carnivorous megafauna: the terror bird, which roamed the wilds of South America and as far north as Texas and Florida for millions of years, terrorizing all and…

The Greenland shark, Somniosus microcephalus, is a huge cold-water shark that dwells in the Arctic and north Atlantic oceans, near the coast of Greenland, Canada and the extreme northern United States. It is generally regarded as the fourth largest shark in the world, reaching up to 7 meters in length and up to 1000 kilograms in mass - behind only the great white, basking and whale sharks.

It pretty much looks like someone punched me so hard that they left a dent right in the middle of my chest. Mother dearest calls it my "cave," and little brother says my heart is a black hole that sucked my sternum in. I have moderate congenital pectus excavatum, a common but surprisingly not well-known skeletal defect.

How it Happens
PE is caused by a deformity in the costal cartilage (i.e. the cartilage connecting the sternum to the ribs). Instead of growing straight…

A dry wind is sweeping over the short grass of the plateau. What little that hasn't been chewed away by the passing sheep is swathed in thorns sharp and hard enough to penetrate the 2 millimeter thick leather of your issued boots. The movement of air generated by the midday heat lifts the muted sounds of copper bells hung from the necks of livestock, specifically sheep, down in the valley below. It stretches out in front of you like some scene from an epic, all jagged peaks distantly hacking at an…