Cycles of Extinction for Earth’s Large Mammals –“New Research Nixes Human Cause in Africa”

 

 

In contradiction to common sense and the observation that humanity’s gain has been biodiversity’s loss, new research disputes the long-held view that our earliest tool-bearing ancestors contributed to the demise of large mammals in Africa over the last several million years. Instead, the researchers argue that long-term shifts in climate drove these near-time extinctions, mainly in the form of grassland expansion likely caused by falling atmospheric carbon dioxide (CO2) levels.

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“Dinosaurs On the Moon” — The Impossible Magnitude-12 Earthquake That Changed Our World

 

Sixty Six million years ago a 14 kilometer long, Mount Everest sized asteroid blasted a hole in the ground, the Chicxulub Impact, releasing the equivalent of 100 million megatons of TNT creating a 20-mile deep, 110-mile hole and sterilizing the remaining 170 million square miles of the ancient continent of Pangaea, killing virtually every species on Earth and, oddly, paving the way for the emergence of the human species.

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“The Great Dying” –Our Evolving Sequel May Be More Like Science Fiction Than Anything in Earth’s History

 

“There was forest-destroying acid rain and a landscape so barren that rivers had stopped winding. There were carbon dioxide levels so high, and global warming so intense, that much of the earth had become too hot even for insects.”

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“Planet Earth’s Big Bang” –‘Triggered By an Immense Collision in Space 470 Million Years Ago’

 

Within a geological blink on an eye, a span of only 10 million years, the number of species on the planet tripled. This exotic phenomenon took place within a 40-million-year florescence of life, unlike any before or since known as the Great Ordovician Biodiversification Event, the biggest expansion of biodiversity in Earth’s history.

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“Earth’s Apocalypse” –Is Mars Our Planet B? ‘Human Pioneers Living There Would Quickly Become a New Species’

 

 

During the rise of mammals, following the Chicxulub impact (above) that ended the dinosaur epoch with the force of 300 million nuclear bombs, the planet’s temperatures spiked in a spooky way that the planet may experience again and soon. The planet’s leading climate scientists, including the late Stephen Hawking, are predicting that Earth will soon reach a tipping point and that the human species we’ll need an escape plan, an insurance policy, a Planet B.

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Last Week’s Top 5 Space & Science Headlines –“Interstellar Spacecraft Mystery Goes Viral to the Big Bang Star”

 

 

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