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The massive rock that smashed into Earth 66 million years ago killed off many dinosaur species, but the animals were in steady decline for millennia before the cataclysm, researchers report.

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image: Tracking Zika’s Evolution

Tracking Zika’s Evolution

By Jef Akst | April 15, 2016

Sequence analysis of 41 viral strains reveals more than a half-century of change. 

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image: Branching Out

Branching Out

By Ashley P. Taylor | April 11, 2016

Researchers create a new tree of life, largely composed of mystery bacteria.

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image: Lightning-Fast Spider Bites

Lightning-Fast Spider Bites

By Tanya Lewis | April 8, 2016

Trap-jaw spiders have the fastest, most powerful bite of any arachnid, scientists show. 

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image: Accomplished Biophysicist Dies

Accomplished Biophysicist Dies

By Catherine Offord | April 5, 2016

Harold Morowitz, who dedicated his career to investigating the origins of life, has passed away at age 88.

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image: Capsule Reviews

Capsule Reviews

By Bob Grant | April 1, 2016

Lab Girl, The Most Perfect Thing, Half-Earth, and Cosmosapiens

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image: Immune Influence

Immune Influence

By Kate Yandell | April 1, 2016

In recent years, research has demonstrated that microbes living in and on the mammalian body can affect cancer risk, as well as responses to cancer treatment.

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image: Microbes Meet Cancer

Microbes Meet Cancer

By Kate Yandell | April 1, 2016

Understanding cancer’s relationship with the human microbiome could transform immune-modulating therapies.

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image: Startup Licenses “Vaginal Seeding” Approach

Startup Licenses “Vaginal Seeding” Approach

By Tracy Vence | March 31, 2016

Boston-based Commense plans to develop microbial and nonmicrobial interventions aimed at improving child health.

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image: Minimal Genome Created

Minimal Genome Created

By Ruth Williams | March 24, 2016

Scientists build a living cellular organism with a genome smaller than any known in nature.

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