Mordashov, 53, made the bulk of his $19.8 billion fortune from steelmaker Severstal PJSC
More than 20 billionaires have been identified within European families in the past 12 months, according to the Bloomberg Billionaires Index
Egalitarian Sweden, an object of ardent progressive adoration, has more billionaires per capita than the United States
Jeff Bezos, Bill Gates and Peter Thiel are funneling cash into nuclear fusion projects.
Billionaires' wealth enjoyed its greatest-ever increase in 2017, rising 19 per cent to $8.9 trillion ($7.8 billion euros) shared among 2,158 individuals, says a UBS report
Their combined net worth is $1.08 trillion
With 1094 billionaires, Mumbai leads the country, followed by Delhi at a distant second with 545