Rio de Janeiro 2

Rio de Janeiro is one of the most spectacular cities in the world, certainly THE most spectacular city I've ever been to, and the one with the most dramatic landscapes. Visiting this city is one of those unforgettable memories that remain with you forever. Especially for me, because it was my first ever independent foreign trip, one that I did all by myself as a youngster in my 20's then; having to navigate the language barrier, then react and adapt to the new and the unfamiliar. The experience was thrilling in the extreme, and is probably from where my curiosity and love for adventure were born.

This mountain is the Corcovado, and the large sculpture on top of the mountain is known as Cristo Redentor, or Christ the Redeemer. It took nine years to complete, between 1922 - 1931. It is an Art Deco-style sculpture, of Jesus Christ with open arms in a cross shape, 38 metres (124ft) high, which is equivalent to a 13-storey building. The total weight of the statue is approximately 1145 tons, of which 30 tons correspond only the head. It is huge. 

The hands and head are the only parts of Christ the Redeemer that weren’t built in Brazil. They were shaped in Paris. The statue’s body is made entirely of soapstone, cut into triangles, glued by hand in a fabric and applied in the structure made of reinforced concrete. The monument is made to withstand winds of up to 250 km per hour. 

I actually walked up to the foot of this sculpture, and took the obligatory tourist photos. The views of the city from the viewing platform at the foot of the statue are breathtaking. I reached the top of  the mountain by taxi, there's a road that winds its way up the mountain, although the last few hundred feet of the climb must be completed by foot. This, even if one had arrived at the top of the mountain by way of the funicular train, the alternative and more popular method of reaching this mountain top. 

My taxi driver took me up there, waited for me, and brought me back down. Then he charged the hell out of me, I was after all a foreign tourist who spoke English. But I didn't mind paying for what seemed to me like a once in a lifetime experience. Also, the driver had a living to make, so..

This statue is one of the New 7 Wonders of the World.

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Africa's Genetic Variation

Africa is the most genetically diverse continent on Earth, harbouring more human genetic variation than all other regions combined. On average, an African genome contains nearly a million more genetic variants than a non-African genome.

This unparalleled genetic richness exists for several fundamental reasons:

The Cradle of Humanity: Modern humans (Homo sapiens) evolved in Africa approximately 200,000 to 300{,}000 years ago. Because humans have lived here longer than anywhere else, they have had more time to accumulate and distribute genetic mutations across the population.

The "Out-of-Africa" Bottleneck: Roughly 50,000 to 60,000 years ago, a small subgroup of early humans (estimated at roughly 10,000 people) migrated out of Africa to populate the rest of the globe. Because this migrating group represented only a fraction of the total African population, they took only a fraction of the continent's genetic diversity with them.

Deep Ancestral Lineages: Extensive studies—such as those published in Science—have identified over a dozen distinct ancestral populations within Africa alone. Groups like the San (Khoisan) in Southern Africa and rainforest hunter-gatherers represent some of the oldest, most divergent continuous lineages in the human family tree.

Environmental & Cultural Adaptation: Africans live in drastically varied environments, ranging from deserts and tropical rainforests to high mountain ranges. This exposure to diverse climates, diets, and infectious diseases has driven strong local genetic adaptations over millennia.

Source: https://www.sciencedirect.com/science/article/pii/S0002929722003172

https://www.science.org/doi/10.1126/science.1172257