More polar bears going hungry

日期:2019-03-09 08:15:14 作者:邓喙 阅读:

By Kate Ravilious WARMER temperatures and earlier melting of sea ice are causing polar bears to go hungry. The number of undernourished bears has tripled in a 20-year period. “The changes in sea ice are affecting the hunting opportunities available. Polar bears are in serious trouble” Seth Cherry of the University of Alberta, Canada, and colleagues monitored the health of polar bears in the ice-covered Beaufort Sea region of the Arctic during April and May in 1985, 1986,