News
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AnimalsAmerican bullfrogs may be threatening a rare frog species in Brazil
A search for environmental DNA from critically endangered Pithecopus rusticus frogs turned up DNA from invasive American bullfrogs instead.
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Science & SocietyNot all cultures value happiness over other aspects of well-being
Nordic countries topped the 2024 world happiness rankings. But culture dictates how people respond to surveys of happiness, a researcher argues.
By Sujata Gupta -
ArchaeologyHuman brains found at archaeological sites are surprisingly well-preserved
Analyzing a new archive of 4,400 human brains cited in the archaeological record reveals the organ’s unique chemistry might prevent decay.
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Health & MedicineLong COVID brain fog may be due to damaged blood vessels in the brain
MRI scans of long COVID patients with brain fog suggest that the blood brain barrier may be leaky.