According to the World Health Organization’s 2022 report, an estimated 970 million people were affected by mental health conditions in 2019, of which 28.9% were depressive disorders. Treatment typically includes therapy and use of an antidepressant, according to the American Psychological Association.

In a quiet village in western Switzerland, an unassuming stretch of railway has become a proving ground for an ambitious idea: turning train tracks into linear solar farms.

Enter geoengineering, the bold and controversial concept of deliberately manipulating Earth’s climate systems to counteract global warming. Once relegated to the realm of dystopian fiction, geoengineering is now being debated in scientific journals, government meetings, and even corporate boardrooms.