LOS ANGELES, April 23 (Xinhua) -- Astronomers at the Massachusetts Institute of Technology (MIT) in the northeastern U.S. state of Massachusetts have discovered a planet located approximately 140 ...

​U.S. Secretary of State Marco Rubio on Tuesday announced a comprehensive plan to reorganize the U.S. State Department, ...

地球是一个奇迹环境｜全球将国家地理中文网设为星标方能收到正常推送对于你的健康而言，清除家中的灰尘比你想象的要重要——先要放下那把鸡毛掸子。研究表明，灰尘中充斥着各种化学物质，这些化学物质与癌症、糖尿病、子宫内膜异位症以及注意力缺陷障碍等健康问题相关。