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Penn State Research

All articles tagged with #penn state research

Abdominal Contractions Trigger Rapid Brain Vein Constriction
science21 days ago

Abdominal Contractions Trigger Rapid Brain Vein Constriction

A study in PNAS reveals that core abdominal muscle contractions, such as those during exercise or coughing, cause ultrafast constriction in major brain veins. This mechanical coupling between the torso and skull challenges the view of cerebral veins as passive drainage channels and offers insights into exercise benefits and migraine triggers.

Boy’s Observation Reveals Ants Transporting Wasp Galls, Correcting Century-Old Biology Textbooks
science24 days ago

Boy’s Observation Reveals Ants Transporting Wasp Galls, Correcting Century-Old Biology Textbooks

An eight-year-old boy in Pennsylvania noticed ants carrying pale objects he assumed were seeds. His father, a Penn State entomologist, identified them as oak galls produced by cynipid wasps. Researchers confirmed that ants transport these galls to their nests, eat the fatty caps, and leave the wasp larvae intact. This behavior mimics myrmecochory but benefits the wasp, not the plant, correcting a century-old biological understanding.