The reason to your sleeping problems could be the excessive change in the climate. Many studies have revealed that the enraging warm weather is causing more insomnia than ever. People are becoming more agitated and distressed due to these changes.
The rapid increase in global warming has been the centre of attention in this matter. One Earth is an organisation that studies the climate change and then give their views of how you can act to solve these expeditiously increasing climatic crisis. According to them, the swift increase in global warming is going to effect two and a half days of sleep per year of an individual. This data is an estimate till the year 2099.