Image of the Day

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image: Image of the Day: Aggressive Posture

Image of the Day: Aggressive Posture

By | April 23, 2013

After someone tried to move this Namib desert-dwelling chameleon off a roadway, it opened its mouth wide in a threat display.

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image: Image of the Day: Sword-Billed Hummingbird

Image of the Day: Sword-Billed Hummingbird

By | April 22, 2013

This South American hummingbird uses its long beak to sip nectar stored deep inside flowers.

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image: Image of the Day: Magnified Moss

Image of the Day: Magnified Moss

By | April 19, 2013

Chloroplasts are visible within cells of the forest-growing moss Plagiomnium affine.

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image: Image of the Day: Chromosome Map

Image of the Day: Chromosome Map

By | April 18, 2013

Chromosomes in a fibroblast's nucleus during the resting stage of the cell cycle are individually labeled with fluorescent tags.

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image: Image of the Day: Spiky Surface

Image of the Day: Spiky Surface

By | April 17, 2013

This scanning electron micrograph of a leaf's epidermis features stoma shaped like small mouths for gas exchange and hair-like structures called trichomes.

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image: Image of the Day: Leaf or Butterfly?

Image of the Day: Leaf or Butterfly?

By | April 16, 2013

This butterfly of the species Catopsilia pyranthe, found in parts of Southeast Asia and Australia, blends in with foliage.

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image: Image of the Day: Beetle Takes Flight

Image of the Day: Beetle Takes Flight

By | April 15, 2013

The rose chafer Cetonia aurata protects its delicate hindwings beneath hard casings, called elytra, until it is time to take off.

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image: Image of the Day: See-Through Flea

Image of the Day: See-Through Flea

By | April 12, 2013

Most freshwater crustaceans of the species Daphnia magna, like this one, are female and reproduce through parthenogenesis.

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image: Image of the Day: Technicolor Stickleback

Image of the Day: Technicolor Stickleback

By | April 11, 2013

This juvenile fish has developing bone stained red and developing cartilage stained blue.

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image: Image of the Day: Immune System at Work

Image of the Day: Immune System at Work

By | April 10, 2013

White blood cells engulf spores of the fungus Aspergillus fumigatus, which often causes disease in immunocompromised people.

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