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image: Ebola Mutation Rate Quibble

Ebola Mutation Rate Quibble

By Jef Akst | March 27, 2015

A study suggests that the virus may not be evolving as quickly as a previous group estimated.


image: Short, Strong Signals

Short, Strong Signals

By Ruth Williams | March 25, 2015

Methylation increases both the activity and instability of the signaling protein Notch.


image: Irisin Skepticism Goes Way Back

Irisin Skepticism Goes Way Back

By Kerry Grens | March 18, 2015

Post-publication peer reviewers had questioned data about the supposed fat-browning enzyme from the get-go.

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image: Oldest <em>Homo</em> Remains Yet Found

Oldest Homo Remains Yet Found

By Ruth Williams | March 4, 2015

A newly discovered 2.8 million-year-old jawbone is thought to be that of a direct human ancestor.


image: A Deathly Pallor

A Deathly Pallor

By Carina Storrs | March 1, 2015

Global warming could lead to lighter-colored insects with waning immune defenses.


image: Capsule Reviews

Capsule Reviews

By Bob Grant | March 1, 2015

Evolving Ourselves, The Man Who Touched His Own Heart, Bats, and The Invaders

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image: Drunk Monkeys

Drunk Monkeys

By Jef Akst | March 1, 2015

UC Berkeley biologist Robert Dudley explains his "drunken monkey" hypothesis for how humans developed a taste for alcohol.


image: Falling Out of the Family Tree

Falling Out of the Family Tree

By Jef Akst | March 1, 2015

A mutation in an ethanol-metabolizing enzyme arose around the time that arboreal primates shifted to a more terrestrial lifestyle, perhaps as an adaptation to eating fermented fruit.

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image: Growth Hormone Guidance

Growth Hormone Guidance

By Jenny Rood | March 1, 2015

Intact growth hormone signaling pathways are needed for methionine restriction to extend mouse lifespan.


image: Long Live Collagen

Long Live Collagen

By Ashley P. Taylor | March 1, 2015

Increased collagen expression is a common feature of many different pathways to extended longevity in worms.


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