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Scientists Discover Ancient ‘Hotspot’ That Shaped the Great Lakes 300 Million Years Ago as Earth’s First Imprint
According to Live Science, the lakes formed about 20,000 years ago because of a hotspot beneath ... that rise from the middle layer of the Earth. Upon coming in contact with the Earth's crust ...
PBS6y
The Big Chill
During the past billion years, the Earth's climate has fluctuated between ... as the "Ice Age", was at its height approximately 20,000 years ago. Although the exact causes for ice ages, and ...
NASA spotted a big asteroid that may hit Earth — what you should know
It's actually good news that NASA spotted a sizable asteroid with a (small) chance of hitting Earth in 2032. It means our ...
Nature3y
Green Sahara: African Humid Periods Paced by Earth's Orbital Changes
Paleoclimate and archaeological evidence tells us that, 11,000-5,000 years ago, the ... variations in the Earth's orbit around the Sun that recur roughly every 20,000 years. Impressively, the ...
Live Science1mon
20,000-year-old 'human' fossils from Japan aren't what we thought
The Ushikawa fossils were initially presented as a humerus bone from the upper arm and the end or head of a femur bone from the leg of a human who had lived more than 20,000 years ago. But in the ...