Image of the Day

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image: Image of the Day: Nitrogen Nodules

Image of the Day: Nitrogen Nodules

By | April 16, 2015

Rhizobium bacteria live in nodules on the roots of legumes like the hairy vetch (Vicia villosa) and convert atmospheric nitrogen into a form the plant can use to make essential molecules.

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image: Image of the Day: Out of the Woodwork

Image of the Day: Out of the Woodwork

By | April 15, 2015

Three new species of woodlizard, including Enyalioides sophiarothschildae (pictured), were recently discovered in the Andes.

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image: Image of the Day: Mosasaur Mom

Image of the Day: Mosasaur Mom

By | April 14, 2015

Recent analysis of baby mosasaur fossils long thought to be those of birds suggests that the extinct marine predators gave birth in the open ocean and not near the shore.

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image: Image of the Day: Hoo’s That?

Image of the Day: Hoo’s That?

By | April 13, 2015

Lar gibbons (Hylobates lar) produce different soft “hoo” calls to greet neighbors, sing duets with their mates, and warn each other about various predators.

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image: Image of the Day: Strong Skin

Image of the Day: Strong Skin

By | April 10, 2015

Collagen fibers that are normally curved stretch and straighten when skin is torn, preventing the tear from spreading.

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image: Image of the Day: Inside an Ammonite

Image of the Day: Inside an Ammonite

By | April 9, 2015

CT scans of hollow fossilized ammonites revealed that the invertebrates could have been buoyant enough to swim like their distant modern cousin, the nautilus.

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image: Image of the Day: Galápagos Gobbler

Image of the Day: Galápagos Gobbler

By | April 8, 2015

Galápagos giant tortoises (Chelonoidis nigra porteri) on the island of Santa Cruz spend more time eating invasive plant species than native ones, a study finds.

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image: Image of the Day: Colorful Self-Destruction

Image of the Day: Colorful Self-Destruction

By | April 7, 2015

Beta catenin (colored bar) binds to centrosomes (bright dots of contrasting color) in asymmetrically dividing C. elegans cells, triggering the signaling protein's degradation and low levels in the daughter cells.

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image: Image of the Day: Social “Pinocchio”

Image of the Day: Social “Pinocchio”

By | April 6, 2015

The Ecuadorian horned anole lizard (Anolis proboscis) is known as the “Pinocchio lizard” for the males’ long noses, which are used in social displays but not for fighting.

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image: Image of the Day: Sickening <em>Shigella</em>

Image of the Day: Sickening Shigella

By | April 3, 2015

Multidrug-resistant Shigella sonnei sickened nearly 250 people in the United States between May 2014 and February 2015, according to a US Centers for Disease Control and Prevention report.

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