The biggest challenge the world is struggling to overcome is the unpredictable climatic conditions across the globe. It is lead by the global warming which is caused by the build-up of greenhouse gases – primarily carbon dioxide, methane, and nitrous oxide – in the atmosphere.
What happens next?
These gases trap heat and create a rise in global temperature. The last decade has been the warmest this century, indeed the warmest for hundreds of years, and many parts of the world have suffered major heat waves, floods, droughts and other extreme weather events as a result. The impacts of global warming include changes in rainfall and soil moisture levels, and rising sea levels. There could also be atmospheric changes and increasingly harsh sunshine levels, resulting in as many as 1.7 million cases of cataracts. In addition, some studies indicate that a global mean temperature increase of 1-2°C would enable malaria to extend its range to new geographical areas.