text: Greta Thunberg is a 16-year-old Swedish environmental activist who shares her anger, frustration and anxiety about the climate with the world. She is neither a scientist nor an economist. She offers no practical solutions to the economic devastation her ideas would cause. Admirable passion. Wrong thesis. Media star. Google Search: 176 million results. Boyan Slat is a 23-year-old inventor who designed the world's first ocean plastic cleanup system at age 16. He now leads a group developing advanced technologies to rid the world's oceans of plastic. His solution involves no economic destruction. Admirable passion. Right thesis. Media: not interested. Google Search: 270.000 results