BlackRock had previously announced that it was looking to self-index some of its funds, a source of worry to MSCI.

FORBES: Fee Fighting the Vanguard Way

But there is a new source of worry for people with HIV - a law that came into force last month, requiring importers of foreign medicines to obtain additional licences to operate in the Ukrainian market.

BBC: Ukraine's youngest HIV campaigner

Something showed up in my unaffected breast and that has been a huge source of worry for myself and my family.

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Groundwater is far-and-away the largest source of freshwater in a world where many regions worry about critical shortages.

UNESCO: OFFICE IN DAKAR

"This is what you worry about the most, " a source with knowledge of the investigation said.

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Others worry that America, in particular, relies too much on financial firms as a source of profit growth.

ECONOMIST: Business is booming almost everywhere