Annan stressed the need for the negotiations to focus on increasing the flow of money from rich to poor regions to help reduce their vulnerability to climate hazards while still curbing the emissions of the heat-trapping gases.

Explaining what the data revealed, he said: "What you see is that even after three years, mental health is still better, which is unlike many other things that we think will make us happy." He observed that people living in green spaces were less stressed

He observed that people living in green spaces were less stressed, and less stressed people made more sensible decisions and communicated better.

83% of workers say they're stressed about their jobs, nearly 50% say work-related stress is interfering with their sleep, and 60% use their smartphones to check in with work outside of normal working hours.

If after work you lie around on your bed and get irritated by political commentary on your phone or get stressed thinking about decisions about how to renovate your home, your brain has not received a break from high mental arousal states.

The 83% of American employees who are stressed about their jobs – up from 73% just a year before – say that poor compensation and an unreasonable workload are their number-one sources of stress.

We are more likely to lie, research shows, when we are able to rationalise it, when we are stressed and fatigued or sec others being dishonest.