This book shows me some problems in the earth.In the first chapter, it talks about greenhouse effect.Greenhouse effect is the temperature rose to a new high. It can kill people who cannot stand high temperature.After greenhouse effect, chapter 2 is about earth layers.I know upon sky(troposphere)is stratosphere,then is mesosphere and thermosphere. That is so amazing.And also, human activities can influenced nature. Like burning fossil fuels,destroying forests,the world's booming population.These questions lead to more carbon dioxide product.