Great Human Race

Bill sacrifices his atlatl darts to make a small fire and create make shift crampons before venturing onto the ice.

Bill and Cat survey the Nile with their primitive tools, a bone club and spear in hand.

Bill Schindler and Cat Bigney travel along the rocky Khogno Khan mountains with their herd as they commence their journey to their winter camp.

A cob looks on in alarm at a large Nile crocodile resting on the river banks.

Bill uses his Aceulean hand axe to shave down and sharpen a spear for hunting.

Bill and Cat wake up freezing and leave their snow shelter under a fresh blanket of snow.

Bill Schindler and Cat Bigney look out from a baobab tree where they built a nest to sleep for the night.

Bill Schindler and Cat Bigney look out from a baobab tree where they built a nest to sleep for the night.

Bill Schindler's pots cool in the ashes overnight after being fired.

Bill Schindler adds fuel to a bonfire in which his dried pots will fire and undergo the chemical process to turn into ceramic. The pots must be warmed and cooled very slowly otherwise they could explode.

Cat Bigney collects decomposed wood for material in order to build a nest in a baobab tree for the night.

Bale Mountains National Park, Bale, Ethiopia: Bill Schindler and Cat Bigney come across a dead bushbuck in the Bale Mountains and decide to capitalize on the find for resouces. (Photo Credit: NG Studios/ Tahria Sheather)

Bill and Cat walk down the river gully on their way over the Caucasus Mountain Range.

Cat Bigney and Bill Schindler finish off their composite spears - a razor sharp spear point hafted onto a hardwood shaft that is fashioned into a bamboo javelin. With their tools finished, they're ready to hunt.

Cat Bigney and Bill Schindler finish off their composite spears - a razor sharp spear point hafted onto a hardwood shaft that is fashioned into a bamboo javelin. With their tools finished, they're ready to hunt.

Bill Schindler uses his obsidian hafted knife to whittle wood for fishing tools.

Bill uses two pieces of quartzite to create an Acheulean hand axe.

Bill Schindler herds his unruly herd through deep sand in the dunes. Some species of sheep are able to produce up to 30 pounds of wool in a single year.

Cat Bigney and Bill Schindler work into the night bundling reeds for their reed boat, and take a moment by the fire to speculate on whether the boat will float or come apart.

Cat ties on a boar tusk necklace to symbolize the successful boar hung she and Bill just accomplished.

The end of the Ice Age started 18,000 years ago, as the ocean began to release carbon dioxide into the atmosphere, which catalyzed global warming trends that altered the Earths climate, making it hotter.

Ice Age genetic material from fungi, plants, and various species of megafauna like woolly mammoths and rhinos have been found in Northern Siberia, suggesting that this region may have been a warm oasis for animals as compared with other ice-locked regions of Northern Europe.