‘Men still run the world’, says Facebook COO

Facing one of its worst crises in a generation, the oil industry is trying to open up - to women. Even when oil was selling at above $100 a barrel, most of the industry's top executives said they struggled to find and retain young talent.

Year after year, it was cited as one of the biggest problems for the industry - one of the best paying in the world - during annual gatherings of its top brass on the sidelines of the World Economic Forum (WEF) in the Swiss Alpine resort of Davos.

But never the issue of gender inequality, which has also been a major topic for discussion at Davos for several years and is once again high on the agenda in 2016.

"Men still run the world ... I'm not sure it's going that well," Facebook Chief Operating Officer Sheryl Sandberg, who has campaigned for greater equality, told a WEF panel on Wednesday.