Purpose Homelessness and psychoactive substance (PS) use are both determinants of physical and mental ill health, with the homeless population using, and dying of PSs more frequently than the general population. However, there is a gap in research on the real-world implications psychoactive...

The importance of natural capital to economic systems is increasingly recognized. Previous empirical models of economic growth rates, however, have emphasized accumulation of physical and human capital. This paper shows that the economic growth of over 70 countries has been positively affected...