Image of the Day

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image: Image of the Day: Intimate Relationship

Image of the Day: Intimate Relationship

By | September 22, 2014

Symbiotic nitrogen-fixing bacteria (Sinorhizobium meliloti) form specialized nodules on the roots of the legume Medicago truncatula.

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image: Image of the Day: Hazardous Hairs

Image of the Day: Hazardous Hairs

By | September 19, 2014

The puss caterpillar (Megalopyge opercularis) was named for its resemblance to a kitten, but its hairs contain spines that sting.

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image: Image of the Day: Golden Spiral

Image of the Day: Golden Spiral

By | September 18, 2014

Cells of the marine diatom Chaetoceros debilis (at 250x magnification) form a corkscrew-like chain.

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image: Image of the Day: Pecking Order

Image of the Day: Pecking Order

By | September 17, 2014

Monk parakeets (Myiopsitta monachus), natives of Argentina known for their widespread feral populations, have intricate social networks shaped by both rivalries and alliances.

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image: Image of the Day: Taking the Heat

Image of the Day: Taking the Heat

By | September 16, 2014

A study of brown anole lizards in the Bahamas shows that cold-blooded animals could adapt quickly to climate change by becoming more active at warmer temperatures.

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image: Image of the Day: Preserved Pattern

Image of the Day: Preserved Pattern

By | September 15, 2014

A study of sea lampreys (Petromyzon marinus) suggests that the expression pattern of Hox genes during hindbrain development is conserved between these jawless fish and jawed vertebrates.

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image: Image of the Day: Fiber Former

Image of the Day: Fiber Former

By | September 12, 2014

In a silk gland from the golden orb-web spider (Nephila clavipes), falling pH and surging carbon dioxide pressure launch the synthesis of silk fibers from spidroin proteins.

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image: Image of the Day: Stark Contrast

Image of the Day: Stark Contrast

By | September 11, 2014

In a lava field on the Hawaiian island of Maui, Skippy's Pond is home to bacteria that give it a bright orange crust; scientists are sampling the crust and the shrimp that nibble on it.

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image: Image of the Day: Desert Fish

Image of the Day: Desert Fish

By | September 10, 2014

In the wild, the Devils Hole pupfish (Cyprinodon diabolis) is confined to a single geothermal pool in the Mojave Desert; a conservation breeding program uses colorful yarn to hold the fish's precious eggs.

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image: Image of the Day: Avian Baby

Image of the Day: Avian Baby

By | September 9, 2014

Off the coast of Réunion Island in the Indian Ocean, research on the critically endangered Mascarene petrel (Pseudobulweria aterrima) yielded this unusual photo of a flying bird bearing an egg.

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