Rock study may have just revealed cause of Triassic mass extinction

Rocks from two hundred million years ago show us how everything died and how nothing is new.

Credit: Elenarts/Shutterstock
  • A new study suggests that the mass extinction that gave dinosaurs the evolutionary upper hand was caused by oceanic oxygen deprivation.
  • Using ratios of sulfur isotopes, researchers could estimate changes in ocean oxygen levels in ancient seas.
  • The authors suggest a similar mechanism as that which can cause dead zones in oceans today caused a mass extinction.
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Polar bears could be extinct by 2100, says heartbreaking new study

If Arctic ice continues to melt at its projected rate, the bears will go extinct due to starvation by the end of the century according to a first-ever projected timeline.

  • A new report on climate change by the University of Toronto is projecting that most of the polar bear population could reach extinction in under 100 years due to starvation.
  • Polar bears are dependent on sea ice for hunting seals, a primary component of their diet. As temperatures rise and sea ice continues to shrink it has become increasingly challenging for the carnivores to hunt for food.
  • The Arctic is likely to have warmed more than double the amount of the global average this year compared to pre-industrial temperatures.
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Titanosaur footprints discovered on the roof of a French cave

Scientists discovered footprints made by some of the largest creatures ever to walk the Earth.

Credit: Jean-David Moreau et al./J. Vertebr. Paleontol.
  • Paleontologists published a paper on the discovery of dinosaur footprints on the roof of a French cave.
  • The prints are deep underground and were made during the Middle Jurassic period.
  • The footprints belonged to titanosaurs, the largest land animals ever.
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The platypus is headed for extinction, warn Australian scientists

Australia's beloved and bizarre egg-laying mammal could start vanishing in coming years if current trends continue.

  • Platypuses are nocturnal, semiaquatic animals that are endemic to Australia and Tasmania.
  • A new study suggests that the species could lose half its population over the next 50 years, due mainly to drought, human development and climate change.
  • In 2019, the United Nations reported that some 1 million species of plants and animals are at risk of extinction.
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Resurrecting Extinct Species Could Kill Off Endangered Species, Study Finds

How can we stop extinction? One solution scientists have been developing for decades is de-extinction — the process of resurrecting extinct species through genetic engineering.

 

Three-dimensional render of a woolly mammoth. (Credit: Shutterstock)

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