There are some 15,000 delegates at the UN Climate Conference in Copenhagen - and that's a lot of voices all striving to be heard. Activists can take extreme measures to attract attention, but it's harder for the official delegations representing the small, often impoverished nations, who are most at risk from the consequences of climate change.
 
One such nation is Fiji, an island state in the Pacific. They've sent a 16 strong delegation including the country's prime minister. Fiji is a country with little economic clout and even less political influence. Their demands are unlikely to count for much in the eyes of major powers such as the US, China or Europe. Nevertheless, says a representive of the Fijian Foreign Ministry, they have to try and make an impact in Copenhagen:
 
"This is the only option we have to put our voice across and our position across to the world. We are looking for a legally binding instrument, that is the bottom line for us; it's the survival of our people. People like ourselves, we have a human face, our message can be emotional. We're not very much into the economics of things; we do not have the financial resources or massive economic interests to protect. We have our people to protect, it's basically the human face to climate change."

Listen to an interview with a representive of the Fijian Foreign Ministry:

Do something and do it now
Outside the conference centre there's plenty of attention for the demands of poor nations - activists have travelled from all around the world in the hope that their presence will help concentrate the minds of the politicians inside. The common thread running through all the various protests and workshops and publicity stunts is that something must be done, and it must be done now. And that the rich nations must offer concrete support to the developing world.
 
We just pray
One activist who's come to Copenhagen to add his voice to the throng is from Tuvalu. Tuvalu is another of the small island nations most threatened by global warming and rising sea levels but too poor to take measures to fight the consequences. He didn't want to give us his name but was happy to tell us what he's hoping for:
 
"I can say only this, please consider the Tuvaluvan people's rights, and our future dream. Please do something good for the environment, good for the earth, good for our future. We face a big problem now. We just pray. If we have money we want to build a sea wall. But we don't have money and we don't have any resources."
 
Listen to an interview with the Tuvaluvan activist:

Throwing grain against the wind
One way small countries can increase their chances of being heard is by joining together. AOSIS, the Alliance of Small Island States is one such group, the Climate Vulnerable Forum is another. One of the most vulnerable countries in the world is the republic of Kiribati. It's a collection of 33 coral atoll islands spread over a vast amount of sea. The highest point in the Republic is just three metres above sea level and most of the islands are less than 2 metres - meaning that even an especially high tide can cause problems. And, says the president's secretary Betarim Rimon, those high tides are occurring more and more frequently. Mr Rimon is also in Copenhagen, and while he's desperate for an agreement, he's not confident that the needs of his country figure high on anyone's agenda:
 
"The smaller you are, the weaker your voice is. We take every opportunity that we have in international forums, we just shout out the grave concern of our people. Most of the time we feel that we are throwing grain against the wind. And we just wonder, don't they have ears? Don't they have a heart to listen and to feel this? It is not a matter of economic development; it is a matter of survival. There's no hope for us if nothing is done in Copenhagen."
 
Listen to an interview with Betarim Rimon: