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image: Learning to Become a Tree Hugger

Learning to Become a Tree Hugger

By Amy Maxmen | August 1, 2011

A guide to free software for constructing and assessing species relationships

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image: The First Plant Interactome

The First Plant Interactome

By Jessica P. Johnson | July 28, 2011

Protein interaction networks in Arabidopsis give clues to plant evolution and immunity.

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image: On the Origin of Birds

On the Origin of Birds

By Cristina Luiggi | July 27, 2011

The discovery of a new bird-like fossil challenges longstanding theories about which species of dinosaur gave rise to the avian lineage.

24 Comments

image: Electric Dolphins?

Electric Dolphins?

By Jef Akst | July 27, 2011

Like many fish and amphibians, the Guiana dolphin can sense low levels of electrical activity in the water—an ability not previously reported in true mammals.

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image: Latitude Affects Human Eye Size

Latitude Affects Human Eye Size

By Jef Akst | July 27, 2011

People living near the Earth’s poles, where days are often short and light often low, have larger eyes and visual cortices than those closer to the equator.

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image: Chimp Brains Don’t Shrink with Age

Chimp Brains Don’t Shrink with Age

By Tia Ghose | July 25, 2011

Unlike human brains, chimpanzee brains don’t get smaller as they age, suggesting that pronounced neurological decline is a uniquely human byproduct of our oversized brains and extreme longevity.

33 Comments

image: Neanderthal DNA in Modern Humans

Neanderthal DNA in Modern Humans

By Jef Akst | July 19, 2011

Non-African people carry remnants of the Neanderthal X chromosome, suggesting interbreeding with early human ancestors.

51 Comments

image: Repainting Ancient Birds

Repainting Ancient Birds

By Megan Scudellari | July 1, 2011

Using synchrotron rapid scanning X-ray fluorescence to map the distribution of trace metals in avian fossils over 120 million-year-old, researchers reconstruct the pigment patterns of their feathers—revealing some of the extinct birds' long-lost colors.

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image: Thymus Finder

Thymus Finder

By Richard P. Grant | July 1, 2011

Editor’s Choice in Immunology

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image: Foresight

Foresight

By Karen Hopkin | July 1, 2011

Studying the earliest events in visual development, Carla Shatz has learned the importance of looking at one’s data with open eyes—and an open mind.

12 Comments

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