Uncategorized

  1. Paleontology

    ‘Thunder beast’ fossils show how some mammals might have gotten big

    Rhinolike mammals called brontotheres repeatedly evolved into bigger and smaller species, a fossil analysis shows. The bigger ones won out over time.

    By Elise Cutts
  2. Animals

    Why some hammerhead sharks seem to ‘hold their breath’ during dives

    Scalloped hammerhead sharks in Hawaii seem to limit the use of their gills during deep dives to prevent losing heat to their surroundings.

    By Freda Kreier
  3. Physics

    Science explains why shouting into the wind seems futile

    Sending a sound upwind, against the flow of air, makes the sound louder due to an acoustical effect called convective amplification. Sound sent downwind is quieter.