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Life

Contender for world’s oldest dinosaur identified

An African specimen suggests the lineage may have arisen 15 million years earlier than thought.

Astronomy

Voyager crossing superhighway to solar system exit

The latest milestone in a 35-year journey may signal an impending passage to interstellar space.

Life

Among bass, easiest to catch are best dads

Recreational fishing may be inadvertent evolutionary force, favoring cautious fish over better caretakers of the young.

Life

Gut bacteria may affect cardiovascular risk

An abundance of antioxidant-producing microbes seems to keep plaques from breaking free and causing heart attacks and stroke.

Planetary Science

Mars rover deploys final instrument

Soil analysis finds organic compounds of uncertain origin.

Humans

Help Wanted: Must play well with high-powered coworkers

Leisure activities make or break job applicants at major banking, legal and consulting outfits.

Math

After nailing 2012 elections, number crunchers suggest pollsters are asking the wrong question

Life

Immune disease an added blow to fungus-ridden bat populations

Rare immune complication previously seen only in people devastates animals that had appeared to evade white nose syndrome.

Space

First rock from the sun turns out to have ice

Frozen material at the planet’s poles likely came from comet or asteroid impacts.

Health & Medicine

Simulated brain mimics human quirks

Model representing 2.5 million neurons performs calculations, issues instructions for a behavior, and then expands its decision into action.