Mixed up / Katherine Bagley --
The great forgetting / Nicholas Carr --
The social life of genes / David Dobbs --
What our telescopes couldn't see / Pippa Goldschmidt --
A race to save the orange by altering its DNA / Amy Harmon --
A life-or-death situation / Robin Marantz Henig --
23 and you / Virginia Hughes --
Why the brain perfers paper / Ferris Jabr --
O-rings / Sarah Stewart Johnson --
When animals mourn / Barbara J. King --
Where it begins / Barbara Kingsolver --
Danger! This mission to Mars could bore you to death! / Maggie Koerth-Baker --
The lost world / Elizabeth Kolbert --
Awakening / Joshua Lang --
Imagining the post-antibiotics future / Maryn McKenna --
The return of measles / Seth Mnookin --
Ants go marching / Justin Nobel --
TV as birth control / Fred Pearce --
The madness of the planets / Corey S. Powell --
Learning how to die in the Anthropocene / Roy Scranton --
Under water / Kate Sheppard --
Twelve ways of viewing Alaska's wild, white sheep / Bill Sherwonit --
The separating sickness / Rebecca Solnit --
Trapline / David Treuer --
The rebirth of Gorongosa / E.O. Wilson --
Bringing them back to life / Carl Zimmer.