Ordinary citizens bear witness to its effect, businesses call on their governments to act on it, and the new UN Secretary-General says it will be one of his top priorities. This radio program looks at the reality of climate change. Our world is warming, and there's little doubt that our emissions of carbon dioxide and other greenhouse gases are causing the earth's temperature to rise. A report compiled by the world's leading scientists and climate experts, released in Paris in February, confirmed with a 90 per cent certainty that human activity is responsible for climate change. Nelly Damaris, a farmer in Western Kenya, is living first hand the effects of climate change.