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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Is 150 years really as long as we can ever live?

The oldest person in history lived to 122

Photo by Paolo Bendandi on Unsplash
While most of us can expect to live to around 80, some people defy expectations and live to be over 100. In places such as Okinawa, Japan and Sardinia, Italy, there are many centenarians.
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How evolution shifts from unicellular to multicellular life

When facing a predator, single cells sometimes unite to defend themselves, paving the way for more complex multicellular life forms to evolve.

Bernardes et al., Nature Communications, 2021
  • A new study examined the evolution of a unicellular algae species over 500 generations, roughly six months.
  • The researchers subjected one of the two algae groups to a predator.
  • The results showed that the algae exposed to a predator were far more likely to acquire adaptations toward multicellularity.
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Why are octopuses so intelligent?

The opening of jars, while impressive and often used to illustrate octopus intelligence, is not their most remarkable ability.

Photo by Qijin Xu on Unsplash
Our last common ancestor with the octopus existed more than 500 million years ago.
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