Inhaled pollutants may inflame more than the lungs (p. 16)

Electrons get moving along the surfaces of a new class of materials (p. 22)

Conquering the rising tide of infection is hindered by the many similarities between humans and fungi (p. 26)

Scientists consider how to pick a prime asteroid for human exploration (p. 5)

A new genetic analysis splits killer whales into multiple taxa. (p. 8)

In one species, adolescents appear to have sprouted a new type of feathers as they matured. (p. 9)

Reactions of chimps to dead companions and infants suggest a basic realization of what death entails. (p. 9)

Several new papers suggest strategies by which American diners can negotiate a mercury minefield to tap dietary benefits in fish. (p. 10)

Early last decade, the world’s tree coverage dropped by more than 3 percent. (p. 10)

Precise measurements could be used to map tiny fluctuations in the surface properties of materials. (p. 11)

As the sleeping brain builds memories it generates dreams about recently learned material, a new study suggests. (p. 12)

Casual speakers drop syllables and even whole words, eavesdropping scientists report. (p. 12)

NASA has released the first images recorded by the Solar Dynamics Observatory, the first craft to examine the sun’s entire disk at high resolution and over a multitude of wavelengths. (p. 14)

NASA has released a stunning image of a nearby star-forming region to celebrate the telescope's 20th birthday. (p. 13)

The first study of its kind suggests an unknown environmental cause for multiple sclerosis, but future research could still yield a genetic trigger. (p. 14)

Lab favorite arrives relatively late to the genetic revolution. (p. 14)

High amounts of EGFR can show up in the blood as much as 17 months before disease is diagnosed, a study finds. (p. 15)

Stomach infection and high levels of inflammatory proteins are more common in people with colon polyps or disease, two studies show. (p. 15)

A new study makes a first step toward personalized chemotherapy. (p. 15)

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Review by Susan Milius (p. 30)

Review by Susan Milius (p. 30)

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