A New Step in Re-Creating First Life on Earth
An RNA molecule that can make copies of a variety of RNAs adds new support to the RNA-world theory.
New Lizard Shows Evolution’s Predictability
A new anole on the island of Hispaniola confirms that ecological communities can follow predictable patterns.
Faster Evolution on a Warmer Earth
When life first emerged roughly 4 billion years ago, DNA may have been a much more malleable molecule.
How to Grow a New Model Organism
To develop new model organisms, scientists will have to find species that are easy to grow in the lab.
The Strange Case of Typhoid Mary
The infamous case of Typhoid Mary underscores the importance of tolerance in understanding disease.