A global heat wave is setting records, igniting wildfires and killing dozens in the Northern Hemisphere this summer. An article titled “It's 32℃ in the Arctic Circle, polar bears will be gone in 40 years” went viral in China, raising people's concerns. Some media outlets also predicted that polar bears may be extinct within 40 years. An expert at the Chinese National Climate Center said it is difficult to predict if the polar bear will become extinct.