Multi-million dollar mission aims to tackle illegal logging and other global problems
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
Executive order could "create void" in funding for family planning services around world
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
Most people know three things about Bill Gates:
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'
The story of Bill Gates is the stuff of legend: Despite pulling good grades, he dropped out of Harvard University in 1975 to go cofound Microsoft, setting him on the path to becoming the wealthiest man in the world.
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