one of the most important info graphics ever.

The wall of speeding trash around earth will stop future space travel.

city in a tower in a city - X-Seed 4000

From 35 000 to a milion of people could a tower called X-Seed 4000 accomodate. This tower is designed for japanese Tokyo by architects from Taisei Construction Corporation. The tower will provide many advantages with its inteligent system responded for example on a climate change, but the huge disadvantage is still the isotonic problem of people suspected because of a level and temperature change.
- from news.architecture.sk

He flew his personal dirigible to his favorite cafe. Super futuristic hover craft technology of the 1890's

Santos Dumont described himself as the first "sportsman of the air." He started flying by hiring an experienced balloon pilot and took his first balloon rides as a passenger. He quickly moved on to piloting balloons himself, and shortly thereafter to designing his own balloons. In 1898, Santos Dumont flew his first balloon design, the Brésil.

After numerous balloon flights, he turned to the design of steerable balloons or dirigible type balloons that could be propelled through the air rather than drifting along with the breeze (See Airship).

Between 1898 and 1905, he built and flew 11 dirigibles. With air traffic control restrictions still decades in the future, he would glide along Paris boulevards at rooftop level in one of his airships, commonly landing in front of a fashionable outdoor cafe for lunch. On one occasion he even flew an airship early one morning to his own apartment at No. 9, Rue Washington, just off Avenue des Champs-Élysées, not far from the Arc de Triomphe. -wikipedia
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Make a refrigerator with out electricity

solar oven

if shiny 45 degree walls is all you need for a solar cooker why dont solar panels have reflectors around them?