ultrafacts: Boyan Slat first proposed his giant marine cleanup machine three years ago when he was just 17 years old. During a TED talk, he sketched a vision for a massive floating boom that would collect trash using the ocean’s own currents. The talk

ultrafacts: Boyan Slat first proposed his giant marine cleanup machine three years ago when he was just 17 years old. During a TED talk, he sketched a vision for a massive floating boom that would collect trash using the ocean’s own currents. The talk

ultrafacts: Boyan Slat first proposed his giant marine cleanup machine three years