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Physics

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<i>Sacharomyces cerevisiae</i> cells in DIC microscopy.

It pays to cooperate

Yeast cells that share food have a survival edge over their freeloading neighbors — particularly when there is bacterial competition.

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To prevent microwaves passing through it from reflecting backward, a new 'metamaterial' uses antennas of alternating orientations (top) that are connected by amplifier circuits (bottom).

Riding herd on photons

A new ‘metamaterial’ prevents electromagnetic waves from reflecting backward, pointing the way toward computer chips that move data with light.

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