Image of the Day

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image: Image of the Day: Cat Nap

Image of the Day: Cat Nap

By | November 9, 2016

Jaguars (Panthera onca) are the largest cats in the Americas, but habitat loss is driving a slow decline in their numbers.

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image: Image of the Day: Do the Wave

Image of the Day: Do the Wave

By | November 8, 2016

Waves of calcium ions begin to propagate across cardiac cells in a mouse embryo just hours before the animal's first heartbeat.

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image: Image of the Day: Spiral Shoot

Image of the Day: Spiral Shoot

By | November 7, 2016

This developing plant shoot grew in a spiral after researchers disrupted the molecular pathway responsible for leaf organization.

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image: Image of the Day: Trippy Tripedaliidae

Image of the Day: Trippy Tripedaliidae

By | November 4, 2016

This box jellyfish (Tripedalia cystophora) lives in the Caribbean, where it feeds on copepods among roots of mangrove trees.

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image: Image of the Day: Sea-Dwelling Symbionts

Image of the Day: Sea-Dwelling Symbionts

By | November 3, 2016

Scientists date the origin of symbiosis between coral and algae to 210 million years ago.

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image: Image of the Day: Endangered Elephants

Image of the Day: Endangered Elephants

By | November 2, 2016

Elephant poaching across Africa could cost $25 million in lost tourism-related revenue every year, researchers estimate.

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image: Image of the Day: <em>Drosophila</em> Development

Image of the Day: Drosophila Development

By | November 1, 2016

Researchers have found that disabling an Alzheimer's disease–associated gene disrupts nervous system development in fruit flies.

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image: Image of the Day: Bat Behind

Image of the Day: Bat Behind

By | October 31, 2016

The bristles on the feet of this Mexican free-tailed bat (Tadarida brasiliensis) help the mammal keep itself clean.

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image: Image of the Day: Branching Out

Image of the Day: Branching Out

By | October 28, 2016

Dana Simmons, a neuroscientist at the University of Chicago, photographs Purkinje neurons illuminated by fluorescent dyes injected into mouse brains.

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image: Image of the Day: Show Horse

Image of the Day: Show Horse

By | October 27, 2016

This foal has been dehydrated for display in the University of São Paulo's Museum of Veterinary Anatomy in Brazil. 

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