A Stone Drill in a 59,000-Year-Old Molar: Neanderthal Dentistry
A Neanderthal dentistry study published May 13 in PLOS One says a 59,000-year-old molar from Chagyrskaya Cave in Siberia preserves…
-
-
115 Patients, 2 Psychedelics: Psychedelic Therapy Depression
A Swiss university hospital’s new psychedelic therapy depression study reported that routine-care patients treated with LSD- or psilocybin-assisted psychotherapy between…
-
Fetal Cells Can Persist in Mothers for Decades After Pregnancy
Fetal microchimerism is the long-term presence of a small number of fetal cells or fetal DNA in a mother after…
-
Short-beaked Echidnas Use a Four-headed Penis as a Two-at-a-time Sperm Delivery System
The short-beaked echidna penis has four rosette-like heads, but only two appear to function at once during mating, acting less…
-
Fish Usually Can’t Breathe Out of Water Because Their Gills Collapse in Air
Fish usually can’t breathe out of water because their gills are built to extract dissolved oxygen from water, and in…
-
Direct Collapse Forms Massive Black Hole Seeds From Pristine Gas
Direct collapse to a black hole is a formation pathway in which a pristine gas cloud avoids breaking into normal…
-
Earth Would Start Freezing Within Days If the Sun Vanished, but the Oceans Would Take Far Longer
Earth would go dark after about 8 minutes 20 seconds, and the surface would fall below freezing within days, not…
-
Batesian Mimicry Hawk Moth Caterpillar Works Best When Large
Hawk moth caterpillars use Batesian mimicry by briefly turning themselves into a fake snake display: they inflate the front of…
-
White Orcas Are Real, but Not All Are Albino
White orcas are real, but most white killer whales are not confirmed albinos. The key distinction is that albinism means…
