James Randi put up $1,000,000 to any diviner or claravoint who could demonstrate their "powers" under controlled scientific tests and observation. He ran it from 1964 until 2015. Thousands tried but none proved successful. It started as $1,000. Then $10,000. Then $100,000. Then $1,000,000. In 2015 JREF decided to take the accumulated bond value and use it to issue grants. A nice outcome. Randi sadly passed away in 2020. He was a very interesting speaker and very accomplished magician (and toured with Alice Cooper in '73 & '74!)