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image: Spiders, Prey Leave DNA

Spiders, Prey Leave DNA

By | November 30, 2015

A study of black widow spiders suggests that the arachnids leave traces of their own genetic material and DNA from prey in their sticky webs.

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image: Gut Bugs to Brain: You’re Stuffed

Gut Bugs to Brain: You’re Stuffed

By | November 24, 2015

Bacteria in the intestine produce proteins that stop rodents from eating.

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image: Buzzed Honeybees

Buzzed Honeybees

By | October 20, 2015

Caffeinated nectar makes bees more loyal to a food source, even when foraging there is suboptimal.

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image: One-Third of Cactus Species Threatened

One-Third of Cactus Species Threatened

By | October 6, 2015

A global assessment of declining cacti populations places responsibility on increasing human activities.

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image: Hormone Affects “Runner’s High”

Hormone Affects “Runner’s High”

By | September 2, 2015

Leptin, the satiety hormone produced by fat, affects neuronal signaling in the mouse brain; interference with this pathway can influence the rewarding effects of running in the animals.

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image: Irisin Redeemed

Irisin Redeemed

By | August 13, 2015

Researchers who first identified irisin quantitate levels of the hormone in human blood and show it is released during exercise.  

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image: Butterflies in Peril

Butterflies in Peril

By | August 12, 2015

Several recent studies point to serious—and mysterious—declines in butterfly numbers across the globe.

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image: A Case of Sexual Ambiguity, 1865

A Case of Sexual Ambiguity, 1865

By | August 1, 2015

This year marks the 150th anniversary of an autopsy report describing the first known case of a sexual development disorder.

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image: Mimicry Muses

Mimicry Muses

By | August 1, 2015

The animal world is full of clever solutions to bioengineering challenges.

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image: Underground Immunity

Underground Immunity

By | July 16, 2015

Arabidopsis thaliana defense hormones shape the plant’s root microbiome. 

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