Image of the Day

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image: Image of the Day: Inside Out

Image of the Day: Inside Out

By | April 28, 2015

During a stage of development similar to animal gastrulation, algal embryos are turned inside out as part of a process scientists have now filmed in 3-D for the first time.

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image: Image of the Day: Pocket Shark

Image of the Day: Pocket Shark

By | April 27, 2015

Researchers sampling deep ocean waters off the Louisiana coast in 2010 found this five-and-a-half-inch-long pocket shark (Mollisquama sp.), which is named for a hole behind its pectoral fin and represents only the second known specimen of its genus.

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image: Image of the Day: Seeing Taste

Image of the Day: Seeing Taste

By | April 24, 2015

Using two-photon excitation microscopy, researchers have captured the first real-time images of an actively tasting mouse tongue, discovering that each taste bud (blue) contains cells that recognize different flavors.

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image: Image of the Day: Stegosaurus Sex Differences

Image of the Day: Stegosaurus Sex Differences

By | April 23, 2015

Female Stegosaurus mjosi had taller dermal plates while males had wider ones, according to a recent study.

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image: Image of the Day: Merging Blood Vessels

Image of the Day: Merging Blood Vessels

By | April 22, 2015

When blood vessels that are no longer needed are pruned, the cells making up the vessels fuse to prevent leakage, a process observed for the first time in vertebrates in zebrafish (pictured).

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image: Image of the Day: Dwindling Wolves

Image of the Day: Dwindling Wolves

By | April 21, 2015

In the 57th year of the world's longest-running predator-prey study, researchers found 1,250 moose and only three resident wolves—down from 24 in 2009—in Isle Royale National Park in Michigan.

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image: Image of the Day: Prolific Poplar

Image of the Day: Prolific Poplar

By | April 20, 2015

Researchers recently modified the cells of a poplar tree to divide more quickly.

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image: Image of the Day: Cracking Cavity

Image of the Day: Cracking Cavity

By | April 17, 2015

An MRI video of cracking knuckles reveals that the popping sound comes from the formation of a small air bubble (the dark cavity on the upper right image) in the synovial fluid of the joint.

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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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