Nature (category filter × )

Single-cell organisms might be able to process information and make decisions

hms.harvard.edu
  • New single-cell organism characteristics found by scientists who looked where no one else bothered, and replicated a 100-year old experiment.
  • The non-funded side-project revealed that an organism called Stentor roeselii can make relatively complex decisions, it’s behaviours aren’t automatic.
  • This might mean that cells can process information and make decisions.

There are a million times more microplastics in oceans than we thought

ucsdnews.ucsd.edu
  • Previous estimates of the amount of microplastics in oceans has just been proven to be very, very wrong.
  • New study provides data that suggests 8.3 million pieces of microplastics per cubic meter of water, previous studies estimated 10 pieces per cubic meter.
  • It was discovered by analysing salps, jellyfish-like water creatures, and study authors found microplastics in all 100 samples.

Despite being reptiles, giant tortoises show mammal-like social behaviour

nature.com
  • Tortoises show great memory, and could be learning from watching each other.
  • Scientists trained Galapagos and Aldabra tortoises to bite a blue, green, or yellow ball.
  • The reptiles remembered it after three months, as well as after 9 years.
  • They used to be called ‘living rocks’, but this shows that they might be more social than we thought.

Beyond the green revolution

iiasa.ac.at
  • Based on data from India, scientists estimate that diversifying crops could be beneficial for the quality of food, as well as the environment.
  • There are 200 million undernourished people in India, which is partially caused by the fact that most farmers grow the same crops -- rice in particular.
  • Promoting different crops, and encouraging farmers to grow them, could increase protein in food by up to 5%, and iron in food by up to 49%.
  • It could also save up to 13% of calories lost during droughts, reduce demand for water by up to 21%, and reduce energy use by up to 12%.

Is a long-dormant Russian volcano waking up? It’s complicated

sciencenews.org
  • New study found a large uptick in the number of earthquakes in Russia’s Kamchatka Peninsula, and it could be Bolshaya Udina.
  • Bolshaya Udina hasn’t erupted for at least 10,000 years, and is presumed to be no longer active, but this could mean that it’s waking up.
  • But some scientists say that it’s too hard to say, and these signs could be pointing to a different volcano.

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  • Psychology Psychology (58) Kids with depressed parents have different brains
  • Cosmos Cosmos (28) Huge black hole found, shouldn’t even exist
  • History History (14) Humans survived off rodents in the mountains during the last ice age, study says
  • Society Society (59) Majority of anti-vaxx ads on Facebook are funded by just two organizations
  • Medicine Medicine (56) Young children have lower grades due to increased salt intake
  • Technology Technology (62) Magnetic Quantum Computing Circuit doesn’t need any electricity
  • Nature Nature (43) Single-cell organisms might be able to process information and make decisions