Why so gassy? Mysterious methane detected on Saturn’s moon

Scientists do not know what is causing the overabundance of the gas.

Credit: NASA
  • A new study looked to understand the source of methane on Saturn's moon Enceladus.
  • The scientists used computer models with data from the Cassini spacecraft.
  • The explanation could lie in alien organisms or non-biological processes.
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Watch the stunning "icy fingers of death" instantly freeze creatures

Strange underwater icicles form in the Earth's coldest regions and freeze living organisms in place.

Credit: United States Antarctic Program
  • Spectacular brinicles form under the ice of our planet's coldest regions.
  • Their formation resembles that of hydrothermal vents.
  • The structures have been called "icy fingers of death" because of their ability to freeze living organisms.
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Cause of worst mass extinction ever found

A new study reveals what caused most life on Earth to die out during the end-Permian extinction, also known as the Great Dying.

Credit: PaleoFactory, Sapienza University of Rome for Jurikova et al., Nature Geoscience 2020.
  • A new paper claims to identify the cause of the Great Dying that occured nearly 252 million years ago.
  • During the worst mass extinction event ever, most of Earth's life perished.
  • The study suggests a volcanic eruption in Siberia spread aerosolized nickel particles that harmed organisms on the planet.
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Want to live 100+ years? You may need unusually good DNA repair

A new study finds an unusual genetic difference in people over 105.

Credit: JIJI PRESS via Getty Images
  • Researchers conduct genetic analyses of 81 Italian people who are over 105 years in age.
  • Five unusual genetic differences were discovered.
  • The differences are implicated in the routine repair of DNA, which seems to work unusually well in these people.
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Long-retracted papers are still cited in major journals

The retraction crisis has morphed into a citation crisis.

Credit: DC Studio via Adobe Stock
  • Even after scientific papers are retracted, hundreds of studies cite them as evidence.
  • Roughly four retractions occur per 10,000 publications, mostly in medicine, life sciences, and chemistry journals.
  • Journals should implement control measures that block the publication of papers that cite retracted papers.
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