UN warns against thirsty tech to solve water crisis
The world needs to better manage its freshwater resources but thirsty new technologies touted as solutions could lead to "serious problems" if left unchecked, a UN report warned Friday.
The world needs to better manage its freshwater resources but thirsty new technologies touted as solutions could lead to "serious problems" if left unchecked, a UN report warned Friday.
Environment
Mar 22, 2024
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Germany can probably only meet its demand for climate-friendly hydrogen by imports, for example, from South America or Australia. For such long-distance transport, hydrogen can be converted into ammonia.
Analytical Chemistry
Mar 13, 2024
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Energy-related carbon dioxide emissions rose to a record level in 2023, but the growth slowed from previous years thanks to continued expansion of clean technologies, the International Energy Agency said Friday.
Environment
Mar 1, 2024
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The first U.S. spacecraft to land on the moon since the Apollo astronauts fell silent Thursday, a week after breaking a leg at touchdown and tipping over near the lunar south pole.
Space Exploration
Mar 1, 2024
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Imagine technology as a race car speeding down a track—it can only go as fast as its engine allows. But just when it seemed like organic solar cells hit a roadblock, along comes 3PNIN, a game-changing molecule shaped like ...
Nanophysics
Feb 27, 2024
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Camouflage refers to the ability to reduce the signal captured by detectors, thereby improving survival rates. However, the combination of detectors operating in multiple spectral bands poses a significant challenge, necessitating ...
Optics & Photonics
Feb 7, 2024
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Thermal radiation is electromagnetic radiation emitted by all objects with temperature and most representatively, there is the solar radiation spectrum that enters the Earth and causes the greenhouse effect.
Nanophysics
Feb 5, 2024
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Japan's moon lander has come back to life, the space agency said Monday, enabling the craft to proceed with its mission of investigating the lunar surface despite its rocky start.
Space Exploration
Jan 29, 2024
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Much like the Earth, our sun is a dynamic body with a complex—and sometimes violent—weather system. Solar storms eject highly energetic radiation that can impact our planet, forming strong auroras and disrupting power ...
Astronomy
Jan 25, 2024
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In the coming years, NASA plans to send several astrobiology missions to Venus and Mars to search for evidence of extraterrestrial life. These will occur alongside crewed missions to the moon (for the first time since the ...
Space Exploration
Jan 24, 2024
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Solar power is the result of converting sunlight into electricity. Sunlight can be converted directly into electricity using photovoltaics (PV), or indirectly with concentrating solar power (CSP), which normally focuses the sun's energy to boil water which is then used to provide power. The largest solar power plants, like the 354 MW SEGS, are concentrating solar thermal plants, but recently multi-megawatt photovoltaic plants have been built. Completed in 2008, the 46 MW Moura photovoltaic power station in Portugal and the 40 MW Waldpolenz Solar Park in Germany are characteristic of the trend toward larger photovoltaic power stations. Much larger ones are proposed, such as the 550 MW Topaz Solar Farm, and the 600 MW Rancho Cielo Solar Farm.
Solar power is a predictably intermittent energy source, meaning that whilst solar power is not available at all times, we can predict with a very good degree of accuracy when it will and will not be available. Some technologies, such as solar thermal concentrators with an element of thermal storage, have the potential to eliminate the intermittency of solar power, by storing spare solar power in the form of heat; and using this heat overnight or during periods that solar power is not available to produce electricity. This technology has the potential to make solar power "dispatchable", as the heat source can be used to generate electricity at will. Solar power installations are normally supplemented by storage or another energy source, for example with wind power and hydropower.
This text uses material from Wikipedia, licensed under CC BY-SA