This is an excellent question that gets to the heart of how these astronomical cycles work. It's important to understand first that these cycles are continuous and sinusoidal (like smooth, repeating waves), not linear with a definitive "start" and "end" point. Therefore, we talk about our position within each cycle rather than when a cycle "began" or is "ending." Here is the current status of each Milankovitch Cycle, explained using the Common Era (CE) calendar. --- 1. Eccentricity (Orbital Shape) · Cycle Period: ~100,000 years (varying between more circular and more elliptical) · Our Current Stage: We are in a period of low eccentricity, meaning Earth's orbit is nearly circular. · This is a long-term trend. Our orbit has been becoming less elliptical for tens of thousands of years and is currently very close to its most circular state. · Is it ending? No. We are not at a peak or trough that would signify a dramatic "end." We ...
Watch "The Perplexing Prehistory of the Sahara" on YouTube - https://youtu.be/oIfIkPszBn0?si=GA3ZRajYXO2ZBWxg deserts cover more than a fifth of the world's land area a desert is simply a place that receives less than 25 cm or 10 in of precipitation a year by this definition Antarctica is the world's largest polar desert followed closely by the Arctic polar desert at almost half the size the Sahara is the largest hot desert in the world it is over four times larger than the second biggest desert the Arabian Desert the would wasn't always this way as many of you may know the Sahara was once a very different place climate is anything but stable and this region has fluctuated drastically throughout prehistoric and even historic times hominans have lived in what is now the aara desert for about as long as they have existed theanthropos jadensis was found on the surface in Northern Chad though it is unknown if this species in particular were the ancestors of later ho...
Transcript 0:08 hello i'm randall carlson and i would like to welcome you to a very special episode of after 0:14 school i'm a designer and builder by profession but have for many years been an avid investigator 0:21 into the marvels and mysteries of this amazing world we inhabit i would like to invite you 0:27 to join us here on a journey into the realm of sacred number and symbol and the forms patterns 0:34 and cycles of both space and time in which these numbers are embedded today thanks to the talented 0:41 team at after school we'll take a peek behind the veil into the ancient symbolism of sacred 0:48 number that still exists as part of our everyday lives the animation format employed here is a 0:56 powerful medium for conveying the essence of this knowledge and so without further ado let us begin 1:13 so what is the universal language it's...