August, 1971. The gentle Mbuti people live in the Ituri rainforest, one of the world’s densest jungles, in northeastern DR Congo. They are among the most ancient of all human populations, with their ancestors having hunted in these forests for over 60,000 years. The tallest among them is under five feet.

It was on my first visit to Africa that I was able to spend time with them. They live in scattered bands of a few dozen each, always on the move in search of game, sleeping in small makeshift huts of branches and leaves, and far away from villages of Bantus who always try to enslave them.

Their music is hypnotic. To the beat of drums of hollowed-out logs, they sing with a polyphonic complexity that is extraordinary. I’ll never forget the performance they gave for me. Alas, no tape recorder – much less videocam back then! (Glimpses of Our Breathtaking World #65 photo ©Jack Wheeler)

The extraordinary rock-cut necropolis known as the Hypogeum (hi-po-gee-um) is the only prehistoric underground temple in the world. For over a thousand years (3500-2500 BC), the temple and burial complex (eventually housing 7,000 skeletons) was carved out and down – dozens of chambers, with rock-cut replicas of above-ground temples including simulated corbelled roofs. (A corbelled roof uses stone slabs that progressively overlap each other until the room is roofed over.)

The Megalthic Maltese learned to cut from the limestone bedrock with tools of stone and antler horn for they had no metal. These folks figured out all by themselves how to build extraordinary temples to their gods and goddesses close to six thousand years ago. Nobody taught them. They were the first. Only one reason Malta is one of our planet’s most fascinating places. (Glimpses of Our Breathtaking World #109 photo ©Jack Wheeler)

On the remote north side of the island of Malekula in Vanuatu, there lives a cannibal tribe called the Big Nambas. The men wear a penis gourd wrapped in pandamus fibers, and eat “man long pig,” cooked human enemies. You have to trek over mountains of thick jungle to reach them. When I was able to years ago, there were a few men who continued the practice. This gentleman is one of them. I was in no danger as they were very kind and gracious to me.

That wasn’t the case a century ago when the first explorers, Martin & Osa Johnson, reached them. Their 1918 film, “Cannibals of the South Seas,” made the Johnsons famous, and you can see it on YouTube. Today they are far more benign. It is an extraordinary experience to meet a culture of fearsome reputation and realize they are people like you and me. (Glimpses of Our Breathtaking World #103 photo ©Jack Wheeler)

[Joel Wade’s Keeping Your Sanity Through the Virtue of Trade and Money today (7/25) bears directly upon this. Money and trade are what have made us human for 90 millennia.]

On display in the National Museum of Congo in Brazzaville: “Ancient Money.” I took the picture because this is the money that made us human 90,000 years ago. They are tiny Nassarius gibbosulus estuarine snail shells too small for food, perforated with small holes to string on a necklace, used as money “before the establishment of the CFA” as the sign says, the Central Africa Franc in 1945.

These are the same species of shell that was the first jewelry in history unearthed at seashore sites in Morocco and hundreds of miles inland in Algeria some 90kya (thousand years ago) – meaning they were traded. For the first time in history, a species began to exchange things between unrelated unmarried individuals to share, swap, barter and trade, and over great distances.

Other animals do not barter. This, maintains science author Matt Ridley, is what made us distinctly human, enabling us to cooperate with other groups or tribes, to innovate, to evolve ever more complex cultures. This little shell, used as money, is the founding of human culture. (Glimpses of Our Breathtaking World #61 photo ©Jack Wheeler)

10,000 years ago, the Sahara was green, with lakes, rivers, and such an abundance of animals it was a hunting paradise for people who lived here. You’ll find their petroglyphs carved on to rock outcroppings like this that my son Jackson and I found on a Trans-Sahara Expedition in 2003.

The Milankovitch astronomical cycles that drive Earth’s climate produced a West African monsoon that greened the Sahara back then. When the cycles shifted ending the monsoon, the Sahara turned dry desert as it remains today. Political cycles that permitted a peaceful crossing of the world’s greatest desert have also shifted, making this too dangerous now.

A Trans-Sahara Expedition is one of the world’s great adventures. Hopefully, one will be possible again in the not-too-distant future. (Glimpses of Our Breathtaking World #7 photo ©Jack Wheeler)