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The Tiny Star Explosions Powering Moore’s Law

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We even used some of the same equipment, such as a filter tuned to the characteristic deep-red emission of energized hydrogen atoms, called a Hydrogen-alpha, or H-alpha, filter. Lithography systems in the 1980s used mercury lamps that radiated at wavelengths of 436 nanometers (violet light) and eventually 365 nm (near-ultraviolet).

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The Top 8 Computing Stories of 2024

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For example, properly designing a webpage can cut 93 percent of the emissions generated by loading the page. Designing greener software is a win-win: the software itself is more efficient, it runs faster, and it causes fewer emissions. But the way we write software can have drastic effects that often go unnoticed.

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How to Get the Most Money from Your Junk or Used Car

Clean Fleet Report

Responsible recyclers adhere to strict environmental standards, ensuring that harmful substances like oil, coolant and mercury switches are safely removed and disposed of. This saves natural resources as well as reducing carbon emissions, the best of both worlds.

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Final session on international mercury convention this week expected to culminate in agreement; UNEP Global Mercury Assessment 2013 finds industrial source Hg emissions may be rising

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Comparison of Hg emissions in 2005 and 2010, by selected sector and region. Unintentional emission sectors: Coal burning, ferrous- and non-ferrous (Au, Cu, Hg, Pb, Zn) metal production, cement production. Intentional-use sectors: Disposal and incineration of product waste, cremation emissions, chlor-alkali industry.

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Upper atmosphere facilitates changes that let mercury enter food chain

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New research shows that the upper troposphere and lower stratosphere work to transform elemental mercury into oxidized mercury, which can easily be deposited into aquatic ecosystems and ultimately enter the food chain. Exposures to mercury can affect the human nervous system and harm the brain, heart, kidneys, lungs, and immune system.

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EPA proposing mercury rule for taconite iron ore processing plants

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The US Environmental Protection Agency (EPA) is proposing amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for taconite iron ore processing plants that include new emission standards for mercury as well as revising the existing emission standards for hydrogen chloride and hydrogen fluoride.

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Chalmers team develops method to reduce levels of mercury in sulfuric acid

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Researchers at Chalmers University of Technology, Sweden, have developed a method that can reduce the levels of mercury in sulfuric acid by more than 90%, even from low levels. It is therefore a worldwide challenge that sulfuric acid often contains one of the most toxic substances: mercury.