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Thank you. The Global Story, wherever you get your BBC podcasts. A group of environmental protesters picketing outside a bank.

They're preventing staff from getting inside.

They claim the bank provides billions in funding to fossil fuel companies.

Greenhouse gas levels have never been higher.

If we're to limit global warming, business has a crucial role to play,

because they operate in sectors that need to radically change,

like energy, transport and finance.

Thousands of company bosses will be touching down in Dubai for this year's COP climate change talks.

They start today. And they'll be touting their green credentials.

We're really there to network.

I mean, I think the most common phrase that's used at COP is, oh, you should meet X or you should meet Y.

But environmentalists claim that many of these businesses are not acting fast enough.

And they're increasingly concerned about the growing role of fossil fuel companies at COP.

There is a fear that they would be greenwashing.

We've seen it in many businesses now.

And obviously these corporations do not undermine the climate negotiations.

Are environmentalist right to be worried?

I'm Sam Fennick and today in Business Daily from the BBC World Service, we're asking,

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