The Athenian Agora. The Agora of Athens was the center of the ancient city: a large, open square where the citizens could assemble for a wide variety of purposes. On any given day the space might be used as a market, or for an election, a dramatic performance, a religious procession, military drill, or athletic competition.
Bear spray is a non-lethal bear deterrent designed to stop aggressive behavior in bears. Its use can reduce human injuries caused by bears and the number of bears killed by people in self-defense.
polar bears are considered to be marine mammals. A polar bear's front paws propel them through the water dog-paddle style. The hind feet and legs are held flat and are used as rudders. A thick layer of fat, up to 11 cm (4.3 in.) thick, keeps the polar bear warm while swimming in cold water. Polar bears can obtain a swimming speed of 10 kph (6.2 mph). A polar bear's nostrils close when under water.