But some of the world' s biggest economies rely on coal.

Help us, O Lord our God, for we rely on you, and in your name we have come against this vast army.

Many workers will have to rely on welfare, and that's a big loss for society overall.

Countries instead largely shirked the challenge, content to rely on export-led growth by holding down their exchange rates.

More and more European banks are being shut out of the market and relying on the European Central Bank for liquidity.