Many environmental problems seem so big that only governments, local authorities or big companies can deal with them. One example is global warming. We need government action to reduce emissions from coal and oil burning power stations and to develop safer sources of power. These require tough regulations and huge investment. The loss of forests and other habitat is another problem. How can we as individuals stop the destruction of the Amazon or Indonesian rain forests? Yet another example is waste. When people live in cities, they may not be able store or recycle waste, so huge landfills or incinerators are needed.