Their conscience is money. In Asia particularly, the burning of rain forests has caused immeasurable damage to the environment and global climate deterioration. Whoever is responsible for burning down the high carbon content rainforests is to blame. Those countries should make strict laws regarding environmental pollution. There is no doubt that the earth is warming up.
Global summits are useless.
The greed of companies is to blame for this as governments are actually powerless and not willing to go through with the changes that are necessary. However, the most ironic thing is that research and development in the private sector will ultimately solve this problem.