equator
How Iapetus got its ridge
For centuries, people wondered how the leopard got its spots. The consensus is pretty solid that evolution played a major role.
But it’s only been five years since the arrival of high-resolution Cassini Mission images of Saturn’s bizarre moon I…
Climate change may create tipping points for populations, not just species
As Earth’s climate warms, species are expected to shift their geographical ranges away from the equator or to higher elevations.
While scientists have documented such shifts for many plants and animals, the ranges of others seem stable.
W…