Top holdings include a water and sewer revenue bond issued by Miami-Dade County, Florida, an Atlanta, Georgia Water and Waste Revenue Bond, and a New Jersey Health Care Authority Revenue bond.

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Using computer simulations, David Clary of University College, London, has examined how water molecules bond together.

ECONOMIST: Molecular bonding

The PSU is led by former senior police officer and Yorkshire Water managing director Kevin Bond.

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At body temperature, the polymer-water bonds weaken, and the polymer molecules prefer to bond with each other.

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Julie Pham, a broker at Corcoran Group who has the Bond Street listing, said the views of old brick buildings and water towers from the 1, 500-square-foot terrace and the penthouse windows reflect the "urban alienation" in some of Moby's music and movie soundtracks.

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The water company Severn Trent is raising money by offering an inflation-linked corporate bond to the public, rather than to professional investors.

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Worcester resident Lesley Bond, 64, said she used to be "a nervous wreck" every time water levels in the nearby River Severn began to rise.

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