At least 100 world leaders are now signed up to attend the UN climate change summit in Copenhagen next week.Among those hoping for a deal are numerous leaders from developing nations, including Africa. Environmental groups are planning to highlight the example of Kilimanjaro, Africa’s highest mountain, and concerns it may lose its glaciers within 20 years. An environmental activist in Kenya, Wangari Maathai, said: “This is an excellent time for Kenya, maybe, to realise, and for the rest of Africa to learn ,what we are talking about when we say that climate change is going to hit Africa very seriously. And it is partly because Africa is completely unprepared for what is coming.” Opinion is divided on how much of the burden of reducing greenhouse gases should be covered by rich countries, and what role should be played by developing nations. China, India, Brazil and South Africa say they will present a joint proposal.