Many experiments have shown it: simple molecules can combine chemically—outside of living things—to form the building blocks of DNA, the key component of life. But just how this combination occurs is unknown. Scientists want to find out, since that might explain how DNA originated.The answers are tentative and raise further questions--but that's science.
Now, chemists have proposed what they call the first detailed, feasible account of how one of DNA’s major building blocks could have arisen on an early, lifeless Earth. The necessary ingredients: five cyanide molecules, they said.
Nov 2, 2007
closer and closer to the earliest life
More exciting origin-of-life research, focusing on adenine: