Lead contamination has been estimated to account for around 900,000 deaths per year worldwide (IHME, 2019). Typically developing countries suffer the most, where the use of lead in paint and other household products is often not fully regulated or controlled.

Over the last half-century, air pollution has become an increasingly critical problem globally. The number of harmful emissions connected to human activity has been rising constantly, and, in many locations around the world, the concentrations of individual pollutants are higher than the recommended safe levels. Elevated emission levels are associated with various harmful effects, such as damage to human health and well-being, decreases in productivity, a reduction in land prices, and equally significantly global environmental issues like climate change.

As waste accumulation keeps expanding, it increasingly poses a serious threat to human health and the environment. Waste can be the source of many diseases, it emits large amounts of methane (a potent greenhouse gas), and exacerbates global warming. According to World Bank estimates, without urgent intervention, the current levels of global waste will increase by 70% by 2050.