LOS ANGELES, June 21 (Xinhua) -- North Dakota Governor Kelly Armstrong declared a statewide disaster on Saturday after three people were killed in a violent tornado that tore through the Upper Midwest ...

MEXICO CITY, June 19 (Xinhua) -- Hurricane Erick was downgraded to a Category 1 on the Saffir-Simpson scale of storm intensity as it dumped rain on southern Mexico Thursday, causing floods, damage to ...

ABAS 天文夏令营课程安排（2025年）主办单位：美洲牧夫天文学会（American Boötes Astronomical Society）时间： 2025年8月11日（周一）至8月15日（周五）每日时间： 上午 9:00–13:00（每天 4 ...