The Full Circle:Working overtime, Hu Xue Gang, Shared farming. / Have you noticed mosquitoes showing up earlier this year? Maybe you brushed one away during a walk or heard that familiar buzzing sooner than expected. It might feel like a minor seasonal change — but scientists say it could be a sign of something bigger: longer transmission seasons, expanding insect habitats, and new challenges for disease prevention. So, should the early buzzing alarm us (15:06)? On the show: Niu Honglin, Fei Fei & Yushun