The Change of Human Brain Sizes Illuminating the Age of Megalithic Sites

#humanhistory #brainsize #megalithic Please subscribe and turn on notifications [🔔] so you don't miss any videos. In this video I talk about the change of human brain sizes and the possible correlation with whoever created the megalithic structures. Brain size is one of the most obvious traits that make us human. The volume of the human brain has increased and nearly tripled as humans evolved for over 3 million years. With this dramatic brain size increase and the largest brain to body mass ratio, humans became the most intelligent mammals on the planet. We made tools, utilized fire, built homes and eventually started civilizations. However, not too long ago scientists found a surprising reversal in our own species: that human brains have been decreasing for quite a while and this brain size decline is about 5 times faster than our body size changes, which means our intelligence level is potentially diminishing. Believe it or not, our brains are now the smallest they have been at any time in the past 100,000 years, over 10% smaller. The decrease is in contrast to the general evolutionary tendency of the human cranial capacity to increase. The timing and reasons for this decline are enigmatic. How and why did that happen? And how does this change of human brain size shine light on the age of the megalithic sites? Patreon: https://www.patreon.com/curiousbeing Instagram: instagram.com/curiousbeingtina Twitter: https://twitter.com/CuriousBeing15 This is my YouTube Channel “Curious Being.” I have many diverse and interesting topics to share, such as Lost Ancient Human Civilizations, Megalithic Sites, and other related fascinating studies. History vs. Mystery revealed! Thank you for watching.

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