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image: How, If, and Why Species Form

How, If, and Why Species Form

By , and | November 1, 2013

Biologists have struggled for centuries to properly define what constitutes a “species.” They may have been asking the wrong question—many smaller organisms might not form species at all.


image: The Ultimate Wingman

The Ultimate Wingman

By | November 1, 2013

Differential gene expression between dominant and subordinate male turkeys could help evolutionary biologists deconstruct the roots of sexual dimorphism.

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image: Gravity Determines Cell Size

Gravity Determines Cell Size

By | October 29, 2013

Researchers show that cells may have evolved to be small because of gravitational forces.

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image: Evolving Pain Resistance

Evolving Pain Resistance

By | October 24, 2013

Grasshopper mice harbor mutations in a pain-transmitting sodium channel that allow them to prey on highly toxic bark scorpions.


image: It’s in the Genes

It’s in the Genes

By | October 24, 2013

Researchers find strong correlations between the composition of the human microbiome and genetic variation in immune-related pathways.


image: Ancient Bee Die Out

Ancient Bee Die Out

By | October 24, 2013

Researchers show that one group of bees likely suffered a mass extinction about 65 million years ago.

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image: Confirmed Venomous Crustacean

Confirmed Venomous Crustacean

By | October 22, 2013

Researchers show that a cave-dwelling crustacean may use venom to immobilize and digest its prey.

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image: Secret Botulism Paper Published

Secret Botulism Paper Published

By | October 18, 2013

The discovery of a new form of the deadly botulinum toxin gets published, but its sequence is kept under wraps until an antidote is developed.


image: Fossilized Mosquito Blood Meal

Fossilized Mosquito Blood Meal

By | October 14, 2013

Researchers have discovered a 46-million-year-old female mosquito containing the remnants of the insect’s final blood meal.

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image: Week in Review: October 7–11

Week in Review: October 7–11

By | October 11, 2013

Nobels awarded for vesicle trafficking and computational chemistry; building 3-D microbial communities; mislabeled microbes cause retractions



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