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A controversial hypothesis suggests that jellyfish may one day rule the oceans, and Mola mola may tell us if we are approaching a tipping point.

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The agency is also poised to end a 50-year effort to restore endangered whooping crane populations.

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image: More Details on How Pesticides Harm Bees

More Details on How Pesticides Harm Bees

By Diana Kwon | May 3, 2017

Scientists report that thiamethoxam exposure impairs bumblebees’ reproduction and honey bees’ ability to fly.

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image: Lions Declining in Africa

Lions Declining in Africa

By Karen Zusi | October 29, 2015

A predictive population model suggests that lion populations in West, Central, and East Africa are likely to be halved in the next 20 years.

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image: Genetic Atlas

Genetic Atlas

By Abby Olena | February 17, 2014

Researchers trace the mixing of human populations using DNA.

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image: Animal-tronic

Animal-tronic

By Jef Akst | October 1, 2013

Meet a few robots that pose as flesh-and-blood critters to advance science.

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image: Send in the Bots

Send in the Bots

By Jef Akst | October 1, 2013

Animal robots have become a unique tool for studying the behavior of their flesh-and-blood counterparts.

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image: Boys May Shorten a Mother’s Life

Boys May Shorten a Mother’s Life

By Edyta Zielinska | February 28, 2013

Women living in the 17th to 19th centuries had a slightly lower life expectancy if they gave birth to multiple sons, rather than to daughters.

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image: Rare Alleles Rise with Population

Rare Alleles Rise with Population

By Megan Scudellari | May 11, 2012

As the human population expands, the number of rare genetic variants has dramatically increased.

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image: World Population Hits 7 Billion

World Population Hits 7 Billion

By Tia Ghose | October 31, 2011

Sometime today, Earth’s 7 billionth person was born.

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