"Almost all generic diversity is in bacteria, archaea, and protists. The fungi, the plants, and all the animals are on…"

"There is about as much genetic difference between a bacterium in the soil and an archaean in a hot spring than there …"

"Even the little bit of wobbling that Earth does experience has been enough to cause about twenty ice ages during the …"

"Two hundred fifty million years ago, at the end of the Permian period, volcanoes in what is now Siberia erupted for a…"

"The origin of life itself was a lucky accident. When the oceans formed on an Earth no longer molten, conditions were …"

"As the continents arose from the oceans, minerals in the exposed rocks reacted with carbon dioxide and created inorga…"

"There has always been enough carbon dioxide to keep the Earth warm enough for life, but not too much to bake it to de…"

"You may be nothing more than a complex set of chemical reactions. Solar energy raises the electrons of atoms to high …"

"Most enzymes are lumpy proteins that have little grooves in them into which molecules can slip and react."

"Your cells contain not only the genetic instructions for making a human body but also old genes that the cells of you…"