The automobile and New York City

New York City's residential population, business population and number of tourists continues to grow, and our streets have become more crowded as pedestrians and motor vehicles compete for the same finite spaces. While many ...

Trash for tickets on Indonesia's 'plastic bus'

Dozens of people clutching bags full of plastic bottles and disposable cups queue at a busy bus terminal in the Indonesian city of Surabaya—where passengers can swap trash for travel tickets.

Turning water into ice in the quantum realm (Update)

When you pop a tray of water into the freezer, you get ice cubes. Now, researchers from the University of Colorado Boulder and the University of Toronto have achieved a similar transition using clouds of ultracold atoms.

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