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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: Gut Bacteria Linked to Asthma Risk

Gut Bacteria Linked to Asthma Risk

By | October 1, 2015

Four types of gut bacteria found in babies’ stool may help researchers predict the future development of asthma.

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image: Sex on the Brain

Sex on the Brain

By | October 1, 2015

Masculinization of the developing rodent brain leads to significant structural differences between the two sexes.

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image: Sex Differences in the Brain

Sex Differences in the Brain

By | October 1, 2015

How male and female brains diverge is a hotly debated topic, but the study of model organisms points to differences that cannot be ignored.

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image: Whaling Specimens, 1930s

Whaling Specimens, 1930s

By | September 1, 2015

Fetal specimens collected by commercial whalers offer insights into how whales may have evolved their specialized hearing organs.

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image: Q&A: Placental Ponderings

Q&A: Placental Ponderings

By | August 27, 2015

Biologist Christopher Coe answers readers’ questions about the prescient organ.

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image: Mitochondria Exchange

Mitochondria Exchange

By | August 26, 2015

A decade of research on intercellular mitochondrial transfer has answered some long-standing questions and raised new ones.

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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: Chemical Cocktails Produce Neurons

Chemical Cocktails Produce Neurons

By | August 6, 2015

Two research groups have devised small-molecule recipes to directly transform fibroblasts into neurons.

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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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