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New study confirms: Thinking hard feels unpleasant

If you’ve ever felt drained by intense mental effort, science now backs up your experience. A new meta-analysis, published in Psychological Bulletin, shows that mental tasks requiring effort are often accompanied by unpleasant emotions. From students solving tough problems to…

Black hole jet appears to boost rate of nova explosions

Enlarge / One of the jets emitted by galaxy M87’s central black hole. (credit: NASA and the Hubble Heritage Team (STScI/AURA)) The intense electromagnetic environment near a black hole can accelerate particles to a large fraction of the speed of…