The largest bear in the world and the Arctic's top predator, polar bears are a powerful symbol of the strength and endurance of the Arctic. The polar bear's Latin name, Ursus maritimus, means "sea ...

The diff() operator is used to difference away all shapes marked with the tag(s) given to remove, from the other shapes. Remember that tags applied with tag() are inherited by children. In this case, ...

An illustration of a magnifying glass. An illustration of a magnifying glass.