With no obvious culprit in sight, geneticists do broader sweeps to identify autism’s causes. (p. 18)

Marine census catalogs creatures that roam all corners of the seas. (p. 22)

Metamaterials may offer windows into other worlds (p. 28)

For the first time, astronomers detect a planet beyond the solar system with the potential to be habitable. (p. 5)

A new X-ray microscope technique peers inside materials to reveal their inner nature. (p. 8)

Lights should respond to cars, a study concludes, not the other way around. (p. 8)

Florida panther numbers have tripled since the introduction of females from Texas injected vital genetic diversity, a new report says. (p. 9)

A new study finds deep fissures in Alaska ice that could affect future responses to melting. (p. 9)

Two tabletop experiments demonstrate the time-warping principle at the human scale. (p. 10)

Researchers develop a highly sensitive optical instrument for measuring magnetic fields. (p. 10)

Primordial molecules could have replicated themselves in a slushy place, new experiments suggest. (p. 11)

Enzyme-based machinery could have medical applications. (p. 11)

An eruption may have wiped out Neandertals in Europe and western Asia, clearing the region for Stone Age Homo sapiens. (p. 12)

Children killed in elaborate rituals were drawn from all over the South American empire, new research suggests. (p. 12)

As the decade-long Census of Marine Life totes up thousands of new species, it leaves much yet to discover in the world’s oceans. (p. 14)

Just adding sodium can stimulate limb regrowth in tadpoles, a study finds, raising the possibility that human tissue might respond to relatively simple treatment. (p. 15)

A study finds heaps of genetic variants that influence a person’s stature, but even added together they don’t stack up to much. (p. 15)

Prizes go to IVF, graphene and ‘carbon chemistry at its best’ (p. 16)

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Review by Sid Perkins (p. 30)

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