Space
Dark energy is still the greatest cosmic mystery
Features
This week's magazine
On the cover
Table of contents
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Life
Zoologger: The hibernating lemur that feeds on its tail
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Life
The swarm: stand by for the deafening cicada orgy
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Earth
Painted turtles set to become all-female
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Earth
Earth's crust had a billion-year youthful rampage
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Technology
3D-printed gun's first shots spark calls for ban
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Earth
Keystone's pipeline cousins come under scrutiny
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Earth
New York at high risk of alien invasions
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Life
European and Asian languages have one mother tongue
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Space
New satellite sail is propelled by solar protons
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Space
Mars rover wakes up, gets better laser aiming
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Health
Drug for autism makes people more sociable
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60 Seconds
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Health
How a scientific DSM will transform psychiatry
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Health
US invokes emergency act to keep H7N9 flu at bay
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Physics
Iron nanocrystal shape-shifts to get out of a jam
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Space
New type of supernova born in stellar smash-up
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Life
First land animals kept their fish faces
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Technology
Silver nanoparticles provide clean water for $2 a year
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Technology
World's largest events database could predict conflict
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Technology
Expired emails provide easy route to Facebook hacking
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Technology
One Per Cent: Robot, dress thyself
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Technology
Gliding robot mimics flying fish
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Space
Supersonic cosmic winds blew up giant galactic bubbles
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