42,000 years ago, a breakdown in Earth’s magnetic field led to environmental catastrophes and mass extinctions. Source: https://earthsky.org/earth/magnetic-field-reversal-42000-years-ago-neanderthal-extinction…
Tag: extinctions
Earth’s magnetic field flipped 42,000 years ago, creating a climate ‘disaster’
Earth’s last magnetic flip 42,000 years brought environmental change and extinctions. Could that happen now? Source: https://www.livescience.com/magnetic-flip-42000-years-ago.html
Earth’s magnetic field flipping linked to extinctions 42,000 years ago
Earth’s most recent magnetic pole reversal, called the Laschamp event, has been dated to 42,000 years ago and coincides with extreme weather and the extinction of large mammals Source: https://www.newscientist.com/article/2268520-earths-magnetic-field-flipping-linked-to-extinctions-42000-years-ago/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Mass extinctions follow 27-million-year cycle
Scientists have determined that mass extinctions have occurred throughout history with striking regularity. Multiple times throughout history, combina… Source: https://www.unexplained-mysteries.com/news/341855/mass-extinctions-follow-27-million-year-cycle…
The Yarkovsky effect: Pushing asteroids around with sunlight
The Yarkovsky effect is a minuscule push on a small body in space, imparted by nothing more than sunlight. Source: https://earthsky.org/astronomy-essentials/the-yarkovsky-effect-pushing-asteroids-around-with-sunlight…
Did this mass extinction event trigger dawn of the dinosaurs?
New research suggests that a series of huge volcanic eruptions, 233 million years ago, led to a mass extinction event that heralded the dawn of the dinosaurs. Source: https://earthsky.org/earth/mass-extinction-event-trigger-dawn-of-dinosaurs…
Wildlife In ‘Catastrophic Decline’ Due To Human Destruction, Scientists Warn
An anonymous reader quotes a report from the BBC: Wildlife populations have fallen by more than two-thirds in less than 50 years, according to a major report (PDF) by the conservation group WWF. The report says this “catastrophic decline” shows no sign of slowing. And it warns that nature is being destroyed by humans at a rate never seen before. The…
Evolution: Why it seems to have a direction, and what to expect next
Does evolution always and inevitably generates greater diversity and complexity, having a predictable direction? Source: https://earthsky.org/earth/evolution-direction-what-to-expect-next…
All five of Earth’s largest mass extinctions linked to global warming
There have been five particularly large extinction events in Earth’s history, and for the first time all of them have been linked to global warming Source: https://www.newscientist.com/article/2244353-all-five-of-earths-largest-mass-extinctions-linked-to-global-warming/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Melting Glaciers: Effects on the Environment, Humans, and Biodiversity
Recently, the temperature in the Arctic appears to have hit a new continental high, close to 70 degrees. That’s leading to continued melting of glaciers in the Arctic and around the world. But how will that impact the world’s ecosystems? Dr. David Hik is an Associate Dean of the Faculty of Science as well as […]
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