Forbes attributes his fall to the state of the Manhattan real estate market in which Mr Trump has invested a disproportionate amount of his fortune
Mr Gates, whose wealth is estimated to be around $86bn, beat second-placed Berkshire Hathaway chief executive Warren Buffett, whose fortune was cited to be around $75.6bn
Robots with human qualities may be taking part in the job sector and now the economy too
Mark Zuckerberg, one of the most famous college dropouts in the world, is finally getting his degree from Harvard.
Mr Gates is a proponent of redistributive taxation
Bill Gates, Warren Buffett and Mark Zuckerberg make the list
Billionaire is crossing his fingers one doesn't come around in the next 10 years
It rules out anyone who doesn’t excel in science and numbers
Oil giants investing in kite power, Google planning to use 100 per cent renewable energy, Bill Gates heading up green investment fund and a massive surge in fossil fuel divestment are among the positive signs
Team-up with Richard Branson, Jeff Bezos and others aims to fight climate change - and reap 'super' rewards
Gates: 'Reading books is my favourite way to learn about a new topic'
Nearly a century ago, journalist Napoleon Hill set out on a mission to uncover and document the strategies used by the wealthiest and most successful businessmen in America.
If the idea that a $3 billion investment will create a world free of diseases sounds like the kind of statements that would normally make scientists cringe, it is actually not as crazy as you might think
What do Sting, Bill Gates and Warren Buffett have in common? All three have huge fortunes, and none of them are giving it to their kids.
Self-made billionaire eats in the staff canteen and usually wears the same blazer and shift, which are not from his own clothes shop, Zara
As the march of globalisation continues, the number of very rich people all over the world is increasing.