Table of Contents September 2015

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As subterranean transit projects have crossed paths with ancient ruins, archaeologists have revealed secrets buried beneath global cities from Istanbul to London. In this issue of Discover we delve into the artifacts and what they represent. Next, we take a cosmic tour of super-Earths: our planet’s bigger, weirder, and possibly habitable cousins.

Also in this issue: doctors are using HD imaging to map traumatic brain injuries in a way never before possible. Will it improve treatment?

Plus: What do feces and fossilized dental plaque have in common? Is California’s polluted air causing genetic changes? And how much do you really know about your inner voice? You’ll find the answers and much more inside this issue of Discover.  

Digital editions

FEATURES

city-layers
Subway construction offers archaeologists rare opportunities to dig into historic urban centers — but with the clock ticking.
super-earth-cover
Worlds a few times larger than ours litter our universe, and they have good prospects for habitability.
something-in-the-air
Heavy pollution leaves behind molecular scars that may be passed on to children and grandchildren.
broken-cables
A new imaging technique helps researchers map the damage from traumatic brain injury with unprecedented accuracy.
genes-before-dna
How geneticists around the world struggled to bring the foundation of life's building blocks to light.

DEPARTMENTS

cancer
Stem cells can serve as delivery vehicles for tumor-eradicating drugs.
MM1
Scientists have developed more sophisticated ways to eavesdrop on our internal dialogue.
OS1
To discover the evolution of the bacterial residents we host, a new field of research delves deep into unexpected corners of our fossil record.
HL1
Blood samples from the 1950s help rewrite the history of hepatitis C.
TW
Think "anemone" and "Worcestershire" are mouthfuls to say? Try your tongue at speaking !Xóõ.

THE CRUX

Derelict spacecraft gather dust and bird droppings in a Kazakhstan facility.
A diet swap for just two weeks yields remarkable changes in low- and high-risk cancer groups.
Altered states, military meets culinary, inside engineers' minds and more.
A group of monkeys bands together to protect a fellow primate — a human researcher.
This striking image of a water droplet drying was captured by accident.
The first human trials are underway to test whether antibody therapy can treat schizophrenia and multiple sclerosis.
Astronomers learn what binds a potentially deadly space rock.
Although we’ve focused on salt, limiting added sugar could reduce high blood pressure and heart disease more effectively.
Meteorites likely brought water here, but it didn't stick around until after our planet cooled off.
A man clutches at his throat, unable to breathe. As his oxygen level plummets, the race is on to get a tube safely into his trachea in a matter of seconds.
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