Water never moves in a straight line, water swirls. This movement, known as the vortex, presses air out of water, and how the same can squeeze air back into the water. If there is no air in the water, then there is no dissolved oxygen.
vor 1735 Tagen
In 2009 a couple of graduates from Berkeley University started a business collecting the coffee waste from the coffee shops to grow mushrooms in the inner city, providing competitive and high quality food while generating jobs. Where ever in the world people farm or drink coffee, in the city or countryside, waste can be converted to protein.
vor 1718 Tagen
Dr. Jorge Reynolds built a prototype substitute to the pacemaker by channeling naturally generated current from healthy tissue in the heart, to damaged tissue. Researchers at Fraunhofer demonstrated that temperature differentials between body and phone, and pressure from voice are enough to power a cellphone.
vor 1712 Tagen
The British scientist Stephen Brittland studied the age-old successful tradition to treat open wounds with maggots and offered it solid science – he established Advanced Gel Technologies in Bradford by Leeds.
vor 1726 Tagen
Pylons are engineered to resist wind. New generators could be placed inside the pylons, not on top, further stabilizing the structures. They build their logic on a few of the core principles of The Blue Economy: use what you have, look for multiple benefits and keep it simple.
vor 1663 Tagen
Have you ever wondered why a blade of grass pressed between your thumbs whistles when you blow on it? It is the same force that waives flags in the wind. The cord holding the flag vibrates in the wind. This vibration can build up a tremendous force.
vor 1656 Tagen
Heating up a blend of colored glass, injected with carbon dioxide creates glass foam. This glass is light but hard, and has an outstanding compression strength. It is an ideal abrasive, a powerful insulation, forceful sound barrier and hydroponic growth medium.
vor 1704 Tagen
The sun sends energy to the Earth in the form of light and heat, but we can see and feel only a minor fraction it. Materials can absorb invisible electromagnetic waves and convert them into heat which warms water up as soon as the first light breaks over the horizon.
vor 1635 Tagen
Buildings are typically positioned to the South, as to avoid too much heat accumulation. However, instead blocking out the heat, we should absorb heat with a black wall. Why?
vor 1641 Tagen
The Colombian innovator Paolo Lugari initiated in 1984 the regeneration of the rainforest in the Orinoco savannah. As the plantation grew to maturity, pines were tapped. The resin is processed locally into colophon, a raw material for the paper, ink and paint industry, and turpentine, an inflammable biochemical.
vor 1698 Tagen