NASA has confirmed that asteroid 2024 YR4, which was initially flagged as a potential threat, poses no significant danger to ...

Two people have been confirmed dead and 14 remain missing after a passenger boat collided with an oil waste recovery vessel ...

美国正处于至少七年来最严重的流感季。美国疾病控制与预防中心估计，自去年10月以来，约有2900万美国人感染了流感，比去年同期多20%。自2020年以来，流感首次导致的住院和死亡人数超过了新冠疫情（见图1）。