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image: How Plants Evolved Different Ways to Make Caffeine

How Plants Evolved Different Ways to Make Caffeine

By | September 21, 2016

Caffeine-producing plants use three different biochemical pathways and two different enzyme families to make the same molecule.

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image: Stingrays Chew Too

Stingrays Chew Too

By | September 15, 2016

Researchers observe stingrays moving their jaws to grind up prey, a behavior thought to be restricted to mammals.

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image: Week in Review: September 5–9

Week in Review: September 5–9

By | September 9, 2016

Environmental magnetite in the human brain; prion structure takes shape; watching E. coli evolve in real time; learning from others’ behavior 

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image: First Glimpse at Infectious Prion Shape

First Glimpse at Infectious Prion Shape

By | September 8, 2016

The preliminary structure of the misfolded protein that causes mad cow disease and Creutzfeldt-Jakob disease looks like a coiled mattress spring.

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image: Giant Petri Dish Displays Evolution in Space and Time

Giant Petri Dish Displays Evolution in Space and Time

By | September 8, 2016

As E. coli bacteria spread over increasingly concentrated antibiotics, researchers discover novel evolutionary pathways that confer resistance.

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image: Promoting Protein Partnerships

Promoting Protein Partnerships

By | September 1, 2016

Scientists generate new protein-protein interactions at an impressive PACE.

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image: Protein or Perish

Protein or Perish

By | September 1, 2016

A bacteriophage must evolve certain variants of a protein or die.

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image: Extinct River Dolphin Species Discovered

Extinct River Dolphin Species Discovered

By | August 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.

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image: Using RNA to Amplify RNA

Using RNA to Amplify RNA

By | August 15, 2016

Researchers apply in vitro evolution to generate an RNA enzyme capable of copying and amplifying RNA.

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image: Nailing Down HAR Function

Nailing Down HAR Function

By | August 1, 2016

A remaining challenge in the study of human accelerated regions (HARs) is establishing their specific functions during development and other biological processes.

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