Reuters reports:  A light breeze moves through the cavernous tunnels of London's underground train network, a rarity for the workers whose heads are bent down while methodically sifting rocks and dust armed with just a brush and metal pick.

 Among them is Michael Emordi, one of 10,000 night workers employed by London Underground to help ensure its subterranean railways are in top condition for the capital's four million commuters and prepare an already creaking system for the influx of half a million visitors for this summer's Olympic Games.

 Emordi works as a "fluffer" manually removing hair, fibers and dust shed by passengers every day in the underground railway system, which if left to build has the potential to bring down the whole system.

 It's a tough job but one of the many important roles that night workers perform in the dirt-caked tunnels beneath London's bustling surface to ensure the smooth running of the world's oldest underground transport system, which most Londoners simply refer to as "the tube". Full story.

 More photos of the work being done to spruce up London's tube on PhotoBlog.

More photos of London's olympic venues and the city in our slideshow.

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There was no violence as the camp was cleared of protesters who've been camped out there since October. Full story.

Tens of thousands marched through the streets of London in a mostly peaceful protest, though there were a number of arrests.

Full story. 

The White House in Washington D.C. also celebrates Breast Cancer Awareness Month. See our previous post in PhotoBlog.

More information about the history and tradition of the Lord Chancellor's breakfast.  

Apparently there have been some who favor jettisoning the wigs which went out of style long ago, but for now, they remain.

According to the Guardian (2007 article):

In the late 17th century, during the reign of Charles II, wigs became essential wear in society. The fashion came from the court of Louis XIV. Wig is short for periwig, which derives from the French perruque.

When wigs went out of fashion during the reign of George III, judges and barristers continued to wear them in court.

 More on the police tactics that were in place following the riots earlier this month.

More images in our slideshow.

The singer's father, Mitch Winehouse, apparently closed the memorial service by saying "good night, my angel, sleep tight" to his daughter. Full story.

Today's anniversary follows this week's news about the alleged phone-hacking scandal, which may include some of the victims of the transportation bombings, and the latest news that News Corp will close the News of the World tabloid.

AFP reports that about 500 mourners attended the funeral services for Tim Hetherington today in London. The British born photojournalist and filmmaker had dual American citizenship and had been living in New York City. He died with Chris Hondros, another photojournalist, while covering conflict in Misrata, Libya on April 20. Hetherington was an award-winning combat journalist with experience in Afghanistan, Iraq and Liberia. He was nominated for an Academy Award for the documentary film he co-directed with Sebastian Junger, "Restrepo."

More on the funeral services from the British Journal of Photography.
A exhibition of his work is opening today in Liverpool.
More on Tim Hetherington on PhotoBlog.
View of Tim's still photography work in our slideshow.

Though he disappeared more than a month ago in China, Ai Weiwei's work continues to be shown in galleries and museums all over the world. The zodiac sculptures seen above were recently on display in New York City. More on the artist's exhibitions in London.

Which cake or designer would you chose to prepare your wedding cake?  More about the display from Harrods.

More royal wedding coverage on our blog, The Windsor Knot. More royal photos in PhotoBlog.

And more photo coverage in our slideshows:
Life of Kate Middleton
Life of Prince William
Preparations for the royal wedding.
Wacky royal wedding memorabilia.
The royal guest list - who's coming to the wedding?
A royal courtship.
History of British royal weddings.
Crown jewels.

Those migratory birds are in for a surprise when they get to London. More about the installation.

I could go for a pint.

When you need a job done right, hire a professional. We've been featuring a lot of dogs here lately, but we like to be fair to our readers who prefer felines.

How are you feeling today?

You know its going to be a long day at the train station when the Salvation Army truck is there. More photos of travel distruptions in our slideshow.