- The Hollow Earth is an obsolete concept proposing that the planet Earth is entirely hollow or contains a substantial interior space. Notably suggested by Edmond Halley in the late 17th century, the notion was disproven, first tentatively by Pierre Bouguer in 1740, then definitively by Charles Hutton in his Schiehallion experiment around 1774.
- Do Kwon (Wikipedia)
Kwon Do-Hyung (Korean: 권도형), more commonly known as Do Kwon, is the South Korean co-founder and CEO of Singapore-based Terraform Labs, the parent company of crashed stablecoin TerraUSD and cryptocurrency Luna. TerraUSD and Luna collapsed in May 2022, wiping out almost $45 billion market capitalization in one week and causing hundreds of billions in losses in the larger crypto market. Kwon faces legal and social pressure regarding his role in the Terra crash. Various jurisdictions, including South Korea, Singapore, and the United States are taking legal action against Kwon.