The new ship will also have amenities unknown a century ago, like air conditioning.

WSJ: Billionaire launches plans for Titanic replica

For almost a century he was virtually unknown and only in the last two decades has he re-emerged.

ECONOMIST: English letters

No single development has altered the workings of American democracy in the last century so much as political consulting, an industry unknown before Campaigns, Inc.

NEWYORKER: The Lie Factory

And it highlights the role of colour in the Russian abstract painters of the early part of the century, including a delightful harbour scene by the relatively unknown female artist Olga Rozanova.

BBC: A passion for colour

While many species have yet to be discovered, the knowledge base is expanding faster than ever before and researchers estimate that the vast majority of unknown species may be found and documented by the end of this century.

UNESCO: MEDIA SERVICES