Located 2,400 meters under the Earth’s surface, the Deep Underground and Ultra-low Radiation Background Facility for Frontier Physics Experiments (DURF) is the world’s deepest underground laboratory.

In December 2020, Tsinghua University and Yalong River Hydropower Development Company, Ltd. began work on a daring project under Jinping Mountain in Sichuan’s Liangshan Yi Autonomous Prefecture. Designed to facilitate China’s research in relevant frontier fields, such as particle physics, nuclear astrophysics, and life sciences, the DURF reportedly provides the cleanest space on Earth to study the invisible substance known as dark matter, as the extreme depth it is located at (2,400 meters underground) helps block most of the cosmic rays that usually interfere with the observation of dark matter.

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Pheasant Island is a tiny island on the border between Spain and France that alternates ownership status between the two countries every six months.

Located on the Bidasoa River, the natural border between Spain and France, Pheasant Island is a deserted patch of land with a rather fascinating history and political status. It might not look like much today, but hundreds of years ago it was where the Thirty Years’ War between Spain and France finally ended. The two countries sent a couple of their most important dignitaries to the island to negotiate, with their respective armies gathered on both sides of the Bidasoa, in case things went wrong. 11 years and 24 summits later, a deal was struck, and Pheasant Island became the world’s smallest condominium, under the joint sovereignty of the two nations.

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Airparks, or fly-in communities, are residential neighborhoods designed specifically for people who own their own light airplanes and want to keep them parked in their driveways.

Apparently, there are around 650 airparks around the world, not exactly a small number, so why do so few people know they exist? Well, it may have something to do that most of us can’t afford out own personal airplane, let alone a house design to accommodate it. Living in one of these fly-in communities isn’t cheap. For example, the only available home in California’s Cameron Airpark Estates, one of the world’s nicest airparks, is currently listed on Zillow for $1.5 million. But that’s the price you pay for living in a place where light airplanes are as common, if not more so, than cars.

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