Scientists say they have found a link between human-related greenhouse gas emissions and polar bear reproduction and survival rates for the first time in a new study, potentially overcoming a barrier to protecting the species.
Scientists say they have found a link between human-related greenhouse gas emissions and polar bear reproduction and survival rates for the first time in a new study, potentially overcoming a barrier to protecting the species.
Scientists say they have found a link between human-related greenhouse gas emissions and polar bear reproduction and survival rates for the first time in a new study, potentially overcoming a barrier to protecting the species.