“Wonder” is such a fabulous word. An expression of curiosity and exploration when used as a verb and an expression of amazement when used as a noun, and often these definitions exist in a wonderful superposition. During field trips to the Galápagos and Indonesia, one of my professors encouraged us to continually make an effort to begin our sentences with “I wonder…” To begin our thoughts with openness, curiosity, and amazement.

As Caltech’s de facto biology writer, I have been reading through a hefty molecular cell biology textbook* trying to understand the basic principles of life. And let me tell you, WOW, this book is hitting me in the face with new wonders on every page. A few examples of some things I’ve learned in the first five pages:

  • Your body is made up of 10,000,000,000,000 cells, all of which originated from one single cell that started to divide. Ten trillion cells—more than the number of stars in our galaxy—from a single cell!
  • If you’re over ~20 years old, you’ll have noticed that the way that computers store information has evolved drastically, from big clunky floppy disks or VHS tapes to miniscule chips in an iPhone. So you would expect that, because cells have been evolving and diversifying for over 3.5 billion years, the way they store information would have evolved too, or you’d expect that you wouldn’t be able to read the information of a seaweed cell the same way you read that of a horse cell. Lol, nope. As from the textbook: “You can take a piece of DNA from a human cell and insert it into a bacterium, or [vice versa], and the information will be successfully read, interpreted, and copied.” That’s some crazy machinery.
  • A single strand of DNA is made up of long sequences of four different chemical compounds (A, T, C, or G). Each strand has a direction in which it is read, symbols interpreted from one direction to another. So when we say DNA is “read…” it’s not a metaphor. DNA is a language.

These are only the “amazement” types of wonder. At pretty much every sentence in this book, my brain is screaming, “?!??!” How the crap did all these chemicals come together to encode information that directs the production of more molecules? When did any of this happen? Why did these complex processes like replication and transcription evolve this particular way? ARE WE “ALONE” IN THE UNIVERSE?!

I’m sure some of my biochem-y questions are going to be answered as I keep reading. But the bigger questions of life’s existence and context in the Universe are legitimately open ended. They remain to be continually wondered at.



*Molecular Biology of the Cell, Sixth Edition.