A polar-bear-fur-inspired jumper is thinner than a down jacket and just as warm. Plus, a GPT-powered robot chemist might be the best lab partner and ten of the best science books of 2023. A polar-bear-fur-inspired jumper is thinner than a down jacket and just as warm. Plus, a GPT-powered robot chemist might be the best lab partner and ten of the best science books of 2023.