Stem cell mini-brains reveal how brain regions organize.
Dung beetles reduce harmful methane emissions in cow droppings.
Geologists study earthquake risk in a crowded country.
A pulsing star at our galaxy’s heart shares a black hole’s secrets.
New intravenous vaccine prevents malaria in first tests.
Madagascar's biodiversity boom ended long ago.
Observations of a star’s magnetic field reveal unusual behavior.
Watch the latest Mars rover hunt for signs of life.
In a Chinese quarry, scientists discover the oldest known fossil primate skeleton.
Two giant galaxies combine to form a massive ellipse.