The institution of monarchy may be irrational, Mantel added, but those outside don't have to forget their principles as they observe the "entertainment" the royals provide.

CNN: STORY HIGHLIGHTS

He and his staff bring in couples and observe them as they perform various tasks.

NEWYORKER: Looking for Someone

In the past decades, there has been an explosion in our ability to observe customers as they interact with a company and as they progress through the sales process.

FORBES: Eight Questions to Ask Your Director of Analytics

Recently, however, Carlos Bustamante, a biophysicist at the Howard Hughes Medical Institute at the University of Oregon, in Eugene, and his colleagues there and at the University of California, Santa Barbara, have found a way to observe proteins as they search for their binding sites.

ECONOMIST: How (and why) to find a needle in a haystack | The

Visitors are able to observe the chimpanzees as they explore the landscaped gardens complete with a moat and exotic vegetation.

BBC: Exotic chimpanzee enclosure opens

The songs are also a vivid oral record of recent social developments in China as singers comment on the changes they observe around them.

UNESCO: Culture

That would be perfectly legal under Supreme Court precedents that allow the police to tail suspects, go through their trash and even cross private property to observe their activities as long as they are out in the open.

FORBES: GPS Case Leaves Justices Groping For A Rule

U. to observe the doctors for a month as they put lines into patients, and record how often they completed each step.

NEWYORKER: The Checklist

But sardonic souls in other parties are prone to observe that, as dinner time approaches, they are particularly prone to vote, not with their head or their heart - but with their stomach.

BBC: Voting with the heart - and stomach

Mr Estrada has worked long enough in government as vice-president to see reforms succeed, and to observe how they have made foreign investors eventually take notice of a country whose economic clout in the region was once second only to Japan's.

ECONOMIST: Even flawed democracy serves better than no democracy

They pray five times a day, and are allowed to observe Muslim holidays such as Ramadan, for which the kitchen adjusts its own cooking schedule.

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