A world Record: World's biggest train set

Housed in a previously empty Hamburg building, it covers 1,150 square metres and features almost six miles of track, but is still not complete.

Frederick and Gerrit Braun, 41, have spent 500,000 hours and the equivalent of more than £8million working on it.

Their creation is on display to the public and is so vast they have to employ more than 160 people just to show visitors around.

Their 'Miniatur Wunderland' is split into six regions, including America, Switzerland, Scandinavia, Germany and the Austrian Alps.

Each region boasts detailed models of some of the world's most famous landmarks.

The American section is home to giant models of the Rocky Mountains and Mount Rushmore; the Swiss section has a mini-Matterhorn; and the Scandinavian part has a 4ft long passenger ship floating in a 'fjord'.

The brothers estimate the enormous track will be completed in 2014, when it will cover more than 1,800 square metres and feature almost 13 miles of track.

Today, their model railway comprises 700 trains with 10,000 carriages, 900 signals, 2,800 buildings and 160,000 individually designed figures.

The scenery took 700kg of fake grass and 4,000kg of steel to build. Night and day is even replicated thanks to 250,000 lights.

Speed Demon: Woman, 106, does 108mph at Brands Hatch1

Dulcibella King-Hall notched up a top speed of 108mph in a BMW M3 to celebrate her upcoming 107th birthday.

Miss King-Hall, of Tunbridge Wells, declared: "It could have been faster", as she was helped back into her wheelchair after completing four laps as a passenger.

Asked why she loved the thrill of speed, she replied: "Why shouldn't I? Don't you like it? I like the feeling of the vehicle going vroom."

Born in Devon in 1902, Miss King-Hall has loved cars since she tested vehicles commandeered from civilian use during the Second World War.

Pulling into the pit stop after three laps, Miss King-Hall sped off for a final loop of the circuit watched by a crowd of awestruck well-wishers.

Driver, chief instructor Gary Palmer, 39, said: "I said: 'Shall we do another lap?' and she said 'yes'. It's incredible. We don't normally see people of that age on the track."

Lena Akers, social events coordinator at the Halliwell nursing home where she lives, organised a trip in a Porsche for Miss King-Hall's 100th birthday, then a drive in a Rolls-Royce when she turned 105.

She said she felt she had to "up the ante" this year, adding: "Cars are an abiding passion of Dulcibella's. Her love of speed has her constantly asking our minibus driver 'to go a little faster please'.

"If you have a lady who loves speed, I couldn't think of anywhere else better to come than Brands Hatch."

The World's Billionaires 2008 (GDI, David Lim, Auckland, New Zealand)

Source: Forbes

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The number 13 has long been considered unlucky by superstitious people around the globe. How fitting, then, that Bill Gates' reign as the world's richest person ends after his 13th year at the top.

Despite being worth $58 billion, $2 billion more than last year, Gates is now just the world's third-richest person, ceding the top spot ranking to his good friend and partner in philanthropy, Warren Buffett, whose net worth jumped $10 billion to $62 billion. (All stock prices and net worth valuations were locked in on Feb. 11.) Ranked No. 2 is Mexican telecom tycoon Carlos Slim Helú, whose fortune has doubled in just two years to $60 billion.

It is certainly a dawning of a new era. But not just because of Gates' fall. The 22nd annual rankings of the World's Billionaires reflects all sorts of upheavals in the list's makeup. Two years ago, half of the world's 20 richest were from the U.S. Now only four are. India wins bragging rights for having four among the top 10, more than any other country.

In Pictures: The World's Billionaires

By The Numbers: Race For Title Of World's Richest Man

In Pictures: Youngest Billionaires

For the first time ever, the number of billionaires Forbes could identify crossed into four figures, reaching 1,125. The total net worth of the group is $4.4 trillion, up $900 billion from last year. Despite the turbulence in the U.S. markets, Americans account for 42% of the world's billionaires and 37%, of the total wealth; those shares are down two and three percentage points, respectively, from last year.

Sixteen years after the collapse of the Soviet Union, Russia, with 87 billionaires, is the new No. 2 country behind the U.S., easily overtaking Germany, with 59 billionaires, which held the honor for six years.

The rankings include 226 newcomers. Seventy-seven of the new faces come from the U.S., half of whom made their fortunes in finance and investments, including John Paulson and Philip Falcone, both of whom became wealthy shorting subprime debt. Another third of the new billionaires comes from Russia (35), China (28) and India (19). Two of the most noteworthy new entrants are South Africa's Patrice Motsepe and Nigeria's Aliko Dangote, the first black Africans to make their debut among the world's richest. Dangote is also the first-ever Nigerian billionaire.

It is also a record-breaking year for young billionaires, with Forbes finding 50 under the age of 40, 25 of whom are new to the list. Sixty-eight percent of these under-age-40 tycoons built their 10-figure fortunes from scratch, including Google (nasdaq: GOOG - news - people ) co-founders Sergey Brin and Larry Page; former Enron trader John Arnold, who now runs a hedge fund; India's Sameer Gehlaut, who started online brokerage Indiabulls; and, last but not least, Facebook founder Mark Zuckerberg, who at age 23 might just be the youngest self-made billionaire in history.

Zuckerberg is probably destined to be the most talked about newcomer of the year because of his age and ingenious social-networking site, but there are fascinating entrepreneurs of all ages climbing into the ranks. Some of the more notable ones include China's Gao Dekang, who is one of the world's biggest makers of down jackets and vests; Portugal's Americo Amorim, who turned his grandfather's small cork operation into the world's largest; and Brazil's Eike Batista, who built and lost a gold mining fortune, before hitting it big in iron ore. He is now one of the world's richest mining billionaires.

With all the rosy news of the past year and the overall gains, it is easy to lose sight of the volatility that has been wreaking havoc on these fortunes on a daily basis for months. For instance, Hong Kong's richest person, Li Ka-shing, lost $5.5 billion of his net worth, all tied to publicly held stocks, in the 37 days between Jan. 4 and Feb. 11.

Meanwhile, mainland China's richest person, 26-year-old Yang Huiyan, fell from $17.3 billion in September to $7.4 billion in the rankings. Google co-founder Sergey Brin's fortune touched $25.5 billion in the past year but is now down to $18.7 billion. Others were hit much harder, falling off the list entirely, including Lehman Brothers (nyse: LEH - news - people ) chief Richard Fuld and Bear Stearns (nyse: BSC - news - people ) ex-chief James Cayne (he was sacked), both victims of the world's credit crunch, and Pulte Homes (nyse: PHM - news - people )' William Pulte, whose stock collapsed along with the housing market.

What will happen in the next 12 months as we continue our wealth watching? There will likely be some big losers, some big winners and a lot of ups and downs in between. The only certainty is change itself. This page is sponsored by www.TheKiwi.ws

The Fastest Turtle in the World: The Leatherback (Dermochelys coriacea)

Have you ever think of what is fastest turtle species? The Leatherback (Dermochelys coriacea) is the largest of all living turtles. This is the only living species of the genus Dermochelys. As a sea turtle, the leatherback turtle is the largest and heaviest. It can easily be differentiated from other modern sea turtles by the absence of a reservoir bone. Instead, the shell of the leatherback turtle is covered by skin and turtle meat fat. Dermochelys coriacea is the only existing member of the family Dermochelyidae. They are also the fastest reptile on record. The 1992 edition of the Guinness Book of World Records has the leatherback turtle as having reached a speed of 9.8 meters per second (35.28 kph or 21.9 mph) in water. Source: Wikipedia