miRNA, evolution
How Plants Evolved Different Ways to Make Caffeine
How Plants Evolved Different Ways to Make Caffeine
Ruth Williams | Sep 20, 2016
Caffeine-producing plants use three different biochemical pathways and two different enzyme families to make the same molecule.
Stingrays Chew Too
Stingrays Chew Too
Ben Andrew Henry | Sep 15, 2016
Researchers observe stingrays moving their jaws to grind up prey, a behavior thought to be restricted to mammals.
Week in Review: September 5–9
Week in Review: September 5–9
Jef Akst | Sep 9, 2016
Environmental magnetite in the human brain; prion structure takes shape; watching E. coli evolve in real time; learning from others’ behavior 
Giant Petri Dish Displays Evolution in Space and Time
Giant Petri Dish Displays Evolution in Space and Time
Jenny Rood | Sep 8, 2016
As E. coli bacteria spread over increasingly concentrated antibiotics, researchers discover novel evolutionary pathways that confer resistance.
Promoting Protein Partnerships
Promoting Protein Partnerships
Ruth Williams | Sep 1, 2016
Scientists generate new protein-protein interactions at an impressive PACE.
Protein or Perish
Protein or Perish
Ruth Williams | Aug 31, 2016
A bacteriophage must evolve certain variants of a protein or die.
Extinct River Dolphin Species Discovered
Extinct River Dolphin Species Discovered
Alison F. Takemura | Aug 16, 2016
Overlooked for half a century, a skull in the Smithsonian collection points to a dolphin species that lived 25 million years ago, according to a study.
Using RNA to Amplify RNA
Using RNA to Amplify RNA
Abby Olena | Aug 15, 2016
Researchers apply in vitro evolution to generate an RNA enzyme capable of copying and amplifying RNA.
Pesticide Resistance in a Plant Organelle Drives Down Whole-Genome Diversity
Pesticide Resistance in a Plant Organelle Drives Down Whole-Genome Diversity
Catherine Offord | Aug 1, 2016
A chloroplast mutation has dramatically affected the genomes of railside populations of Arabidopsis thaliana.
Opinion: Our Inner Caveman
Opinion: Our Inner Caveman
João Pedro de Magalhães | Aug 1, 2016
The modern human brain evolved in social and environmental settings very unlike today’s. Despite our cultural and technological progress, tribal instincts remain.