Tag

Mass Extinction

All articles tagged with #mass extinction

science12 days ago•6 min saved

Earth May Reassemble into a New Supercontinent, Bringing Drastic Climate Shifts and Extinction Risks

Scientists outline four possible future supercontinents—Novopangea, Pangea Proxima, Aurica, and Amasia—each arising from how today’s oceans evolve, with climate models predicting divergent outcomes (cooling and expanded ice in some scenarios, warmer, drier conditions in Aurica, and potential widespread glaciation in Amasia). While these projections show strikingly different worlds, they share high uncertainty and stress that substantial ecological disruption or extinction could accompany a new planetary union; humanity’s long-term survival may hinge on living in harmony with Earth's ecosystems.

via Indian Defence Review|

#climate-modeling #future-earth #mass-extinction

science28 days ago•43 min saved

Cambrian Fossil Trove Finds 90 New Species Surviving Deep Waters After Mass Extinction

China’s Huayuan biota from about 512 million years ago yielded 153 species, with roughly 90 new to science. The fossils show soft-bodied anatomy (gills, guts, eyes, nerves) and include radiodont apex predators, indicating deep-water ecosystems endured the Sinsk mass extinction around 513 million years ago even as shallow-water life was decimated, revealing surprising Cambrian diversity.

via Ground News|

#cambrian #huayuan-biota #mass-extinction

science1 month ago•4 min saved

China quarry yields 150 Cambrian species, revealing post-extinction life

A Chinese team in Hunan uncovered over 50,000 fossils from a small quarry dating to about 512 million years ago, capturing more than 150 species (91 new to science) with soft tissues preserved. The Huayuan biota, from just after the Sinsk mass extinction, offers new insights into early animal life and shows surprising connections to the Burgess Shale, implying early larval dispersal and rapid post-extinction recovery during the Cambrian explosion.

via CBS News|

#burgess-shale #cambrian #fossils

science4 months ago•3 min saved

Fossil Evidence Shows Dinosaurs Thrived in North America Before Extinction

New research indicates that dinosaurs in North America were still thriving just before the asteroid impact 66 million years ago, with fossils from the last moments of the Cretaceous period showing diverse and large species like Tyrannosaurus rex, Triceratops, and Alamosaurus, challenging the idea that dinosaurs were in decline before their extinction.

via CBS News|

#asteroid-impact #dinosaurs #fossils

science5 months ago•4 min saved

Comet Explosion Linked to Last Mass Extinction 13,000 Years Ago

New evidence suggests that a comet explosion over Earth around 13,000 years ago caused the Younger Dryas cooling period, leading to mass extinctions and the disappearance of the Clovis culture, supported by impact markers like shocked quartz and nanodiamonds found at archaeological sites.

via Earth.com|

#clovis-culture #comet-impact #mass-extinction

science5 months ago•8 min saved

The Fate of the Dinosaur-Killing Asteroid

The asteroid that caused the dinosaurs' extinction 66 million years ago was about 7 miles wide, leaving behind a massive crater in Mexico and a layer of iridium-rich rock, but little of its physical remains have been found. Its impact triggered global fires, tsunamis, and a 'nuclear winter' effect, leading to the extinction of about 75% of Earth's species.

via Live Science|

#asteroid #chicxulub-crater #dinosaurs

science5 months ago•4 min saved

Siberian Meteorite Impact Formed Earth's Saturn-Like Rings and Massive Diamond Crater

Approximately 34 million years ago, a massive meteorite impact created the Popigai crater in Siberia, transforming graphite into industrial diamonds and contributing to a global cooling event that led to the Eocene–Oligocene extinction, with impacts and volcanic activity significantly reshaping Earth's biodiversity and climate.

via Energy Reporters|

#climate-change #earth #impact-crater

environment6 months ago•5 min saved

Human CO2 Crisis Threatens to Trigger Sixth Mass Extinction

Human activity has significantly accelerated CO2 emissions, risking a sixth mass extinction by overwhelming Earth's natural carbon cycle, similar to past catastrophic events like the Permian extinction. Urgent action to reduce emissions and adopt sustainable practices is crucial to prevent irreversible environmental collapse.

via Indian Defence Review|

#climate-change #co2-emissions #earths-carbon-cycle

environment6 months ago•19 min saved

Are We Heading Toward the Sixth Major Mass Extinction?

The article discusses the potential for human-induced climate change to trigger a sixth major mass extinction, drawing parallels with past catastrophic events like the Permian extinction caused by massive volcanic eruptions and CO2 overloads, emphasizing that the rapid rate of current CO2 emissions could push Earth beyond its capacity to recover, leading to irreversible damage to global biodiversity.

via The Guardian|

#carbon-cycle #climate-change #co2-emissions

science6 months ago•4 min saved

New African Fossils Reveal Secrets of Earth's Largest Mass Extinction

Scientists have uncovered detailed fossils from southern Africa that reveal the rich ecosystems just before Earth's largest mass extinction at the end of the Permian period, providing new insights into which species thrived and which vanished, and offering a broader understanding of global extinction patterns.

via Earth.com|

#biodiversity #fossil-record #mass-extinction

science6 months ago•4 min saved

African Fossil Discoveries Reveal Insights into Earth's Largest Mass Extinction

An international team of paleontologists has uncovered a rich collection of Permian fossils in Africa, providing new insights into the species that lived before the Earth's largest mass extinction, the Great Dying, about 252 million years ago, and helping to better understand the evolution and resilience of life on Earth.

via Indian Defence Review|

#africa #fossil-discovery #mass-extinction

science6 months ago•4 min saved

New African fossils reveal pre-mass extinction era insights

An international team of paleontologists has uncovered well-preserved fossils from Africa's Permian period, providing new insights into the animals that thrived before the Earth's largest mass extinction, with findings including new species of dicynodonts, gorgonopsians, and temnospondyls, which help understand survival and extinction patterns across Pangea.

via Phys.org|

#africa #fossils #mass-extinction

science6 months ago•5 min saved

The Impact of the Dinosaur-Extinction Asteroid

Research by SMU paleontologists has reconstructed Louisiana's ancient marine life, highlighting the impact of the asteroid that caused the dinosaurs' extinction, evidenced by seismic megaripples and fossils, and revealing rapid mammal evolution afterward, thus providing a comprehensive timeline of Earth's major biological transitions.

via Earth.com|

#asteroid-impact #dinosaurs #louisiana-fossils

science7 months ago•4 min saved

Decoding the Ancient Ocean Crisis That Wiped Out Marine Life

A study reveals that volcanic CO2 emissions caused rapid ocean acidification during the Triassic-Jurassic extinction 201 million years ago, leading to the decimation of marine life, and warns that current human activities could trigger similar or worse impacts on today's oceans.

via Indian Defence Review|

#fossil-evidence #mass-extinction #ocean-acidification

science7 months ago•5 min saved

Fossilized oysters reveal insights into past ocean extinctions and future risks

Scientists have confirmed that a rapid drop in ocean pH caused by massive CO2 release from volcanic activity led to a major extinction event 201 million years ago, highlighting the destructive impact of sudden ocean acidification and serving as a warning for current climate change driven by human emissions.

via The Brighter Side of News|

#ancient-seas #carbon-dioxide #mass-extinction