Below the surface of US coastal cities and towns, the salt line is rising in aquifers used for fresh water. The cause is climate change.
As sea levels rise, saltwater will intrude into groundwater. For more than 600 million who draw on aquifers, it means a freshwater crisis.
https://www.youtube.com/watch?v=sKkfMXLe9xM&feature=youtu.be
Roel van DijnenI did not realize that India still has such a small economy, smaller then Germany and UK 😳
Eric KlienAdmin.
Vertical farming saves water, land, and energy — and it could be how we grow food on Mars.
Last week New York City was host to the Indoor AgTech Innovation Summit, an event which drew 600 attendees, featured 90 speakers and included representatives from 42 countries. For a sector with some history of hyperbole about its role in feeding the world, the presentations and discussions during this event featured an overall balance of optimism and pragmatism. Many different kinds of “indoor” facilities were being considered at this meeting ranging from basic greenhouses all the way to multi-level “vertical farms” of the type pictured above. Industry players prefer to call their sector “controlled environment agriculture” or CEA. That is in contrast to mainstream agriculture which has the advantage of free solar energy and rainfall, but which must also deal with all the variables associated with weather and the limitations determined by geography.
The origins of CEA stretch at least as far the 17th and 18th century when “orangeries” in France were used in the winter to protect citrus trees grown in pots. For the last eight decades the Dutch have been technology leaders in the increasingly sophisticated and international greenhouse industry. In recent years CEA has been expanding world wide and trending towards a higher degree of control of the growing conditions including light, temperature, humidity, water, and carbon dioxide concentration. Fertilization in these systems is increasingly micromanaged in a soil-free setting such as “hydroponics” or “aeroponics.” Many tasks and process controls are automated.
This is an expanding industry with 7–8% annual growth projected for greenhouses and 15% per year for vertical farming. Greenhouses are commonly used to produce leafy greens, tomatoes, peppers, and cucumbers. The highest tech, vertical farming systems are currently focused on leafy greens and herbs. Even so, the packaged salad and leafy greens market is said to be in the range of $8.7 billion and projected to grow to between $13 billion and $25 billion within the next 5 years and CEA is likely to account for an increasing share.
Earthen architecture can withstand extreme events such as earthquakes and heavy winds “because of the ability of its structure to distribute the load that it faces on its surface, unlike concrete or cement,” says Damluji.
But mud building’s resilience to earthquakes depends on the intensity of the seismic waves and the soil in which they are built, says Jerome.
Mud buildings are “also protected from seasonal rains and flash floods due to the damp-proof and protective external rendering used in several layers of refined mud, ash and lime coating and plaster”, says Damluji.
The Last Human – A Glimpse Into The Far Future.
German animation and design studio, Kurzgesagt, explores the far future of humanity and how our population may change over the aeons.
Given the numerous global threats we face during this century and beyond – from climate change to nuclear war, asteroid impacts and killer viruses – many of us are concerned that humans could go extinct. But there are reasons to be optimistic, according to this latest video from Kurzgesagt. Rather than approaching the end of human history, we may actually be living at the dawn of our species; the mere prelude for a vast and exciting future that lies ahead.
Way too many batteries still end up in a landfill, though it depends on the type. While 90% of lead acid batteries are recycled, experts estimate that only about 5% of lithium-ion batteries currently enter a recycling stream. Many more lurk in drawers or end up in the trash. That’s a problem.
Why you shouldn’t throw batteries in the trash
Lithium-ion batteries can cause fires when exposed to heat, mechanical stress, or other waste materials. Once exposed, the elements contained in the batteries could leach into the environment and contaminate the soil and groundwater. While this shouldn’t present an issue at a well-managed domestic facility, exported trash might end up at a more lenient landfill. Richa et al. note that “the greater risk is loss of valuable materials.”
Powering plant growth with solar panels instead of photosynthesis could be a more efficient way of using the Sun’s energy for food. But it’s not all good news.
Astronomers have discovered a gargantuan galaxy. Alcyoneus is a massive radio galaxy 3 billion light-years away that extend 5 megaparsecs into space.
Rwanda is making strides to become a major innovation hotspot in Africa — pushing forward with digital development while also prioritizing sustainability.
