“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。
BEIJING, Nov. 4 (Xinhua) -- Footage of four mice living aboard China's space station alongside the Shenzhou-21 astronaut crew has recently been transmitted back to Earth, revealing these small animals ...
科学家们说,近年来,南极野生动植物暴露在紫外线辐射中的时间有所增加,原因是臭氧层空洞在南极地区上空的时间更长了。臭氧层是地球上层大气中的气体保护屏障。 The ozone layer is healing, but it'll take until about the end of the century to restore completely. In Antarctica, the ...
当我们谈论空气污染时,最先想到的可能是灰蒙蒙的天空和刺鼻的气味,以及对肺部的伤害。然而,世界卫生组织指出,空气污染同样是心血管疾病的重要风险因素,对心脏和血管的威胁不容忽视【1】。特别是对中老年人来说,这种风险更为显著。
编者按:在充满挑战且快速发展的神经科学领域,鲜有领导者能像Stacie ...
Funds to buy Lucent's equipment quickly dried up, and its growth should have decelerated or declined., ...