of a steady-state economy. Since the 1990s, most metrics have provided evidence that the volume of the world economy far exceeds critical global limits to economic growth already. According to the ecological footprint measure, earth's carrying capacity — that is, earth's long-term capacity to sustain human populations and consumption levels — was exceeded by some 30 percent in 1995. By 2018, this figure had increased to some 70 percent. In 2020 multinational team of scientists published a study, saying that overconsumption is the biggest threat to sustainability. According to the study a drastic change in lifestyle is necessary for solving the ecological crisis. According to one of the authors Julia Steinberger: “To protect ourselves from the worsening climate crisis, we must reduce inequality and challenge the notion that riches, and those who possess them, are inherently good.” The research was published on the site of the World Economic Forum. The leader of the forum professor Klaus Schwab, calls to a "great reset of capitalism". In effect, mankind is confronted by an ecological crisis, in which humans are living outside of planetary boundaries which will have significant effects on human health and wellbeing. The significant impact of human activities on earth's ecosystems has motivated some geologists to propose the present epoch be named the anthropocene. The following issues have raised much concern worldwide: Pollution and global warming Air pollution emanating from motor vehicles and industrial plants is damaging public health and increasing mortality rates. The concentration of carbon dioxide and other greenhouse gases in the atmosphere is the apparent source of global warming and climate changes. Extreme regional weather patterns and rising sea levels caused by warming degrade living conditions in many — if not all — parts of the world. The warming already poses a security threat to many nations and works as a so-called 'threat multiplier' to geo-political stability. Even worse, the loss of Arctic permafrost may be triggering a massive release of methane and other greenhouse gases from thawing soils in the region, thereby overwhelming political action to counter climate change. If critical temperature thresholds are crossed, Earth's climate may transit from an 'icehouse' to a 'greenhouse' state for the first time in 34 million years. One of the most common solutions to the climate crisis is transitioning to renewable energy, but it also has some environmental impacts. They are presented by the proponents of theories like degrowth