BEIJING, Oct. 20 (Xinhua) -- Amazon's computing service went offline early Monday, causing connectivity issues for companies around the world and disrupting services for several popular websites and ...

Iceland has no shortage of natural dangers – volcanic eruptions, glacial floods, scaldingly hot springs and bitterly cold winters. But it is at least one of the few places on Earth where humans don't ...

“Sawfly（锯蜂）” 是一种与黄蜂相似的昆虫，这种昆虫会切开植物并把自己的卵产在切口处。苏格兰赫瑞-瓦特大学的研究人员一直在研究雌性锯蜂怎么知道如何做出这种独特的切割，从而避免杀死或损伤植物。

我们处理您的数据是为了提供内容或广告，并衡量此类内容或广告的交付情况，进而提取有关我们网站的见解。除非征得您的同意并且出于维护合法权益的目的，否则我们不会与合作伙伴分享这些信息。您可以根据以下特定目的或在每个目的下的链接中的合作 ...