Scientists examined rock cores taken from the Chicxulub crater in Mexico, site of the asteroid impact that triggered dinosaur extinction, and found iridium, a telltale sign of asteroids. Source: https://earthsky.org/earth/asteroid-dust-iridium-chicxulub-crater-dinosaur-extinction…
Tag: extinction
Woolly mammoths were hit by climate change but humans wiped them out
The extinction of woolly mammoths was hastened by a warming climate that shrank and fragmented their habitat, and was then exacerbated by human hunting Source: https://www.newscientist.com/article/2269131-woolly-mammoths-were-hit-by-climate-change-but-humans-wiped-them-out/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Geomagnetic reversal linked to mass extinction
Scientists believe that a historic reversal of the Earth’s magnetic field may have proven catastrophic. The current orientation of our planet’s magnet… Source: https://www.unexplained-mysteries.com/news/344093/geomagnetic-reversal-linked-to-mass-extinction…
Will Boeing Become the Next McDonnell Douglas?
schwit1 shared a thought-provoking analysis from
Aviation Week: Douglas Aircraft started down a 30-year path toward extinction when it merged with McDonnell in 1967. McDonnell management prioritized military programs and was not willing to make the investment necessary to maintain its commercial jetliner market position. By the time it merged with Boeing, Douglas’ jetliner products were on their last legs. It has…
Could Earth’s Reversing Magnetic Poles Accelerate Climate Change?
A team of researchers from Sydney’s University of New South Wales and the South Australian Museum have investigated how the reversal of Earth’s magnetic pole about 42,000 years could have changed earth’s atmosphere. CNN reports: “Using the ancient trees we could measure, and date, the spike in atmospheric radiocarbon levels caused by the collapse of Earth’s magnetic field,” Chris Turney, a…
Upheaval and extinctions linked to magnetic reversal 42,000 years ago
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…
Meet Elizabeth Ann, the First Cloned Black-Footed Ferret
Her birth represents the first cloning of an endangered species native to North America, and may bring needed genetic diversity to the species. From a report: Last year, Ben Novak drove across the country to spend New Year’s Eve with a black-footed ferret. Elizabeth Ann had just turned 21 days old — surely a milestone for any ferret but a particularly…
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…
Our impact on Earth’s ecosystems and biodiversity – in graphics
From global extinction risk to the land we’ve taken from nature, the stats show our impact on the planet is trending upwards – but there are a few bright spots Source: https://www.newscientist.com/article/2268035-our-impact-on-earths-ecosystems-and-biodiversity-in-graphics/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Ten conservation success stories when species came back from the brink
The blue whale, the mountain gorilla and the European bison are among the animals that have avoided extinction, showing what works to preserve the world’s wildlife Source: https://www.newscientist.com/article/mg24933223-400-ten-conservation-success-stories-when-species-came-back-from-the-brink/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…