Innovative Dutch Aquaponics Setup Creates a Mini Ecosystem With Bamboo, Ropes and Old Water Bottles
Mediamatics introduced an aquaponic installation consisting of little more than a PET bottle, rope and some bamboo. Aquaponics is a sustainable food production system that combines the cultivation of fish and vegetables. It is a closed vertical system that utilizes natural bacteria cycles to convert fish waste into vegetable nutrients. Suitable for offices, for living rooms and for the narrow balconies, miniponic installations are likely to be the best way to produce food in the city. Unlike traditional agriculture, miniponics wastes no water, doesn’t need any fertilizer and its vertical design takes up very little space.
"Aquaponics, is a food production system that combines conventional aquaculture, (raising aquatic animals such as snails, fish, crayfish or prawns in tanks), with hydroponics (cultivating plants in water) in a symbiotic environment. In normal aquaculture, excretions from the animals being raised can accumulate in the water, increasing toxicity. In an aquaponic system, water from an aquaculture system is fed to a hydroponic system where the by-products are broken down by nitrogen-fixing bacteria into nitrates and nitrites, which are utilized by the plants as nutrients. The water is then recirculated back to the aquaculture system." - Wikipedia
“Overcoming poverty is not a task of charity, it is an act of justice. Like Slavery and Apartheid, poverty is not natural. It is man-made and it can be overcome and eradicated by the actions of human beings. Sometimes it falls on a generation to be great. YOU can be that great generation. Let your greatness blossom.” ~ Nelson Mandela, who sadly died today aged 95 (story here).
Physics Teacher SOS workshop leader Dan Burns demonstrates how he uses stretched spandex lycra and gravity in his classes to make this impressive space-time warping demo. Filmed from afar, this explainer was made for other educators, but my kids were riveted by these tangible representations that include how our planets orbit the sun, how the moon orbits the Earth, and the free return trajectory used in the Apollo Program.
i got 99 problems and 97 of them are due by the end of the week
The other two were due last week
Spooky Physics Phenomenon May Link Universe’s Wormholes
Wormholes — shortcuts that in theory can connect distant points in the universe — might be linked with the spooky phenomenon of quantum entanglement, where the behavior of particles can be connected regardless of distance, researchers say.
These findings could help scientists explain the universe from its very smallest to its biggest scales.