Scientists discover animal that doesn't need oxygen to live

It's the first time scientists have discovered an animal that doesn't perform aerobic respiration.

STEPHEN D. ATKINSON
  • The animal is a tiny parasite called Henneguya salminicola.
  • The parasite infects salmon and lives within the fish muscle, though scientists aren't quite sure how it breaks down nutrients for survival.
  • The findings are published in the journal PNAS.
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UFO sightings: Why Mount Shasta is the new Roswell

A volcano in California is a hot spot for conspiracy theorists.

Photo Credit: Shasta-Trinity National Forest.
  • Unusual UFO-shaped formations were observed in the skies over Mount Shasta.
  • These were actually lenticular clouds that often look like lenses or flying saucers.
  • This volcano peak in California has long been the subject of conspiracy theories.
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2 new ways to find aliens, according to a Nobel Prize winner

Physicist Frank Wilczek proposes new methods of searching for extraterrestrial life.

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  • Nobel Prize-winning physicist Frank Wilczek thinks we are not searching for aliens correctly.
  • Instead of sending out and listening for signals, he proposes two new methods of looking for extraterrestrials.
  • Spotting anomalies in planet temperature and atmosphere could yield clues of alien life, says the physicist.
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An Earth-sized planet found in the habitable zone of a nearby star

Until about a decade ago, only two habitable zone planets of any size were known to astronomers: Earth and Mars.

Universal History Archive / Getty Images

A few months ago a group of NASA exoplanet astronomers, who are in the business of discovering planets around other stars, called me into a secret meeting to tell me about a planet that had captured their interest.

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Could invisible aliens really exist among us? An astrobiologist explains

The intelligent life we are searching for doesn't have to be humanoid.

Francis DEMANGE/Gamma-Rapho via Getty Images

Life is pretty easy to recognise. It moves, it grows, it eats, it excretes, it reproduces.

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