claim: “For example, Canadian polar bear biologist Ian Stirling learned in the 1970s that spring sea ice in the southern Beaufort Sea periodically gets so thick that seals depart, depriving local polar bears of their prey and causing their numbers to plummet.
evidence: Watts Up With That features material disputing the scientific consensus on climate change, including claims the human role in global warming is insignificant and carbon dioxide is not a driving force of warming.