Maybe your dad said, “The harder you work for something, the more you’ll appreciate it.” Well, father really did know best. Because a new study finds that the harder mice have to work for a tr...

Maybe your dad said, “The harder you work for something, the more you’ll appreciate it.” Well, father really did know best. Because a new study finds that the harder mice have to work for a tr

Modern human babies are essentially learning machines. After birth, their brains grow in ___1___, allowing infants to ___2___ for future social and cognitive achievement. But it wasn’t that way ...

种群（population）指在一定时间内占据一定空间的同种生物的所有个体。种群中的个体并不是机械地集合在一起，而是彼此可以交配，并通过繁殖将各自的基因传给后代。A recent study suggests that adaptive evolu...

它们怎样生活？随着电脑和成像技术的日益强大，它们为科学家们探索地球的过去提供了新的工具。拉塞尔•加尔伍德在几年前开始了“虚拟古生物学”的研究，现在正...

被揭开的秘密我们对恐龙的迷恋可谓经久不衰，从好莱坞大片到各种电视节目都在以不同的方式重现着恐龙的生活。我们之所以是各种恐龙故事如饥似渴的阅读者，其中一...