Why do the Galapagos Islands of South America ... Why does the Arctic have polar bears and Antarctica penguins? These patterns impressed Darwin deeply. To him, they argued that species arose ...

The first astronauts to enter a polar orbit around Earth chose the obvious animal to serve as their zero-g indicator — a plush white *polar* bear ... of an emperor penguin embroidered on ...

The first astronauts to enter a polar orbit chose the obvious animal to serve as their zero-g indicator: a plush polar bear.