是什么使地球如此特别？找出为什么我们的小星球是生命如我们所知般繁荣的理想场所。
我们所知道的生活可以追溯到40亿年前，当时地球几乎无法居住，探索了一个奇妙的故事：尽管存在几乎不可能的敌对条件，但一切都变得如此。
发现所有生物的六个基本组成部分，解压缩DNA阶梯，了解六种不同的王国分类等等。找出一个单一细胞是如何产生870万种动植物的，并了解地球脆弱的生态系统是如何相互依存的，而每个有机体和每一个生物都是维持生命必不可少的。
从最小的单元分解为巨大的章节，再到巨大的“宇宙中我们真的是一个人吗？”问题，这本更新的平装版《我们所知道的生活》以高度可视的页面解释了复杂的科学思想，这些页面为中年级学生提供了清晰的文字。跨越宇宙的开始到现代，我们所知道的生命庆祝着我们所知道的一切，甚至我们所不知道的关于生命的一切。
What makes Earth so special? Find out why our little planet is the perfect place for life to flourish in Life As We Know It.
Life As We Know It goes back four billion years to a time when the earth was barely inhabitable, exploring the amazing story of how everything came to be despite the nearly impossible, hostile conditions that existed.
Discover the six building blocks for all living things, unzip the DNA ladder, learn about the six different kingdom classifications, and more. Find out how 8.7 million species of plants and animals came from one single cell, and see how codependent Earth's delicate ecosystem is, with every organism and every living thing essential to sustain life.
Broken up into manageable chapters from the smallest cells to the huge "Are we really alone in the Universe?" question, this refreshed paperback edition of Life As We Know It explains complex scientific ideas with highly visual pages that have clear text for middle-grade students. Spanning the beginning of the universe to modern day, Life As We Know It celebrates everything we know--and even what we don't know--about life.
