Interesting and very difficult to put into x amount of letters.
Smog is not black. The original smog in London England was formed of sulfur dioxice from coal smoke and fog (hence the name) and was, at best greyer than ordinary fog. The present photochemical smog, formed from automobile exhaust and nitrogen oxides in the presence of sunlight, is brownish yellow when dense enough.
It's between King's London, Great Ormond London, and Birmingham Children's.
There are many places to find great guided walks in London. Some of the places to consider are: London Discovery Tours, London England Tours, London Walks and Visit London.
The best type of newspaper to buy which lists rental properties in London would be a newspaper local to London. A great example of this would be the London Evening Gazette, which is sold both in Newsagents and on the streets by street vendors.
Bill Russell
There were many great medical advances that occurred in the 1950's. A few of the best advances was the start of antibiotics, the polio vaccine, and the ultrasound.
There are multiple attractions in London worth visiting. A couple of them would be the giant clock-tower Big Ben, and the great Ferris wheel London Eye.
http://www.wisegeek.com/what-is-photochemical-smog.htm Best I could do for you but .
"Of course the best way to find great deals anywhere when traveling in online. Check for substantial discounts at 4star hotels and charming boutique hotels. Most hotels close to London can be very pricey. Try Novotel London St. Pancras. This place is beautiful, the location is wonderful, service is great and rooms are around $250. Really, that is a good price for a nice stay in London. Happy Travels!"
Some of the best bed and breakfasts are actually in some of the best private homes in London. A company called Best Bed and Breakfast http://www.bestbandb.co.uk has a fantastic selection of B & B's in great locations & at very reasonable rates.
The easiest ways are either to get the train from London Paddington (direct service with First Great Western) or take National Express coach 444 from London Victoria Coach Station.
The best sports that London is good at is cricket and swimming.