Table of Contents January/February 2015

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Discover's 100 top stories of 2014 is jam-packed with the best in science from the past year. From space exploration to medicine, technology, paleontology and environment, we've got every field covered.

Highlights include a spacecraft's rendezvous with a comet, the origins of the first Americans, how to defeat hackers and an inside look at the Ebola outbreak. Don't miss any of the year's big stories — pick up an issue now.

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TOP TEN

#1ebola_cover
Scientists and health workers scramble to contain the world's worst Ebola outbreak.
#2polar_vortex
The year brought new evidence that human activities are altering the climate in ever more obvious ways.
#3rosetta
A 4-billion-mile journey ended this year when Rosetta reached Comet 67P.
#4eugene_spafford
Hackers breached the computer systems of major retailers this year. What can be done?
#5BICEP2
If the findings are verified, BICEP2 will have amassed the strongest support yet for cosmic inflation.
#6marijuana
The limited number of marijuana studies are inconclusive regarding the drug's safety and efficacy.
#7hoyo_negro_dive
Two discoveries in 2014 settled a contentious debate in archaeology.
#8science_fraud
What can we learn from the scandals that plagued scientific research in 2014?
#9spinosaurus
A new specimen of Spinosaurus aegyptiacus helps researchers sort out its strange traits.
#10entanglement
Researchers make an image using entangled photons.

THE REST OF THE BEST

#11schizophrenia
A mental disease currently diagnosed just by its symptoms may soon yield genetic markers.
#12embryonic_stem_cell
A field long touted for its therapeutic potential is finally producing results.
#13fusion_fuel
Scientists achieve nuclear fusion's 'ignition' milestone.
#14colorado_river
It's the first time the river has linked with its natural terminus in more than 60 years.
#15ken_ono

Mathematicians unlock numerical secrets behind the Rogers-Ramanujan identities.

#16VP113
The discovery of minor planet 2012 VP113 orbiting beyond Pluto changes the borders of our solar neighborhood.
#17chromosome
The synthetic yeast chromosome marks the first step toward synthesizing a eukaryotic organism.
#18brain_map
Scientists imaged more than 1,700 mouse brains to build the most comprehensive mammalian brain map yet.
#19life_of_galaxies
Astronomers gained new insights into the life cycles of galaxies.
#20mosquito
Clinicians may soon have a new tool to combat the virus.
#21dreadnaughtus
Dreadnoughtus schrani's tail alone measures an impressive 30 feet.
#22neurons
Scientists grow a 3-D "brain" on a sponge-like scaffold.
#23crystal_light
By harnessing quantum mechanics, researchers caused light to assume a crystal-like form.
#24elk_river
Thousands of industrial chemicals lack sufficient health and safety information.
#25ringwoodite
A tiny speck of of the mineral ringwoodite makes waves.
#26platlets
"Bioreactor on a chip" could help meet rising demand for blood transfusions.
#27mummy
An analysis of funerary wrappings pushes back the beginnings of mummification.
#28pancreas
A high-tech bionic pancreas provides better control of diabetics' blood sugar.
#29laser
Energy beam can set drones and small enemy boats on fire.
#30wrinkle-thumbnail
Equations calculate how a rubbery material deforms under pressure.
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