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Around 300 mysterious ancient stone spheres or petrospheres are scattered throughout Costa Rica. Some are over 2 meters in diameter and weigh up to 16 tons. They were made into near perfect shapes. Estimated age: 500-2200 years. Almost all of them are made of granodiorite.

Around 300 mysterious ancient stone spheres or petrospheres are scattered throughout Costa Rica. Some are over 2 meters in diameter and weigh up to 16 tons. They were made into near perfect shapes. Estimated age: 500-2200 years. Almost all of them are made of granodiorite.

Hereford Mappa Mundi - the largest intact Medieval wall map in the world and its ambition is breathtaking – to picture all of human knowledge in a single image. The work of a team of artists, the world it portrays is overflowing with life, featuring Classical and Biblical history, contemporary buildings and events, animals and plants from across the globe, and the infamous ‘monstrous races’ which were believed to inhabit the remotest corners of the Earth.

Hereford Mappa Mundi - the largest intact Medieval wall map in the world and its ambition is breathtaking – to picture all of human knowledge in a single image. The work of a team of artists, the world it portrays is overflowing with life, featuring Classical and Biblical history, contemporary buildings and events, animals and plants from across the globe, and the infamous ‘monstrous races’ which were believed to inhabit the remotest corners of the Earth.

Remembering Robert Goddard, whose pioneering work helped make spaceflight possible. Goddard died on August 10, 1945. #genealogy

Remembering Robert Goddard, whose pioneering work helped make spaceflight possible. Goddard died on August 10, 1945. #genealogy