Inuit can keep trading polar bear skins

A US-led proposal to ban the trade in polar bears and their parts has been defeated at an international meeting.

Polar bears have survived global warming before

Despite being separate species, polar bears and brown bears interbred during periods of global warming in the past - and appear to be doing the same today.

Loss of Arctic ice could lead to new hybrid species

The loss of Arctic sea ice could lead to species such as polar bears and some types of seal and whale being lost through hybridization.