The United States, the world's second largest emitter of greenhouse gases, has pledged to halve its emissions by 2030 compared to 2005 levels—but so far is failing to stay on target, analysts say.
Environment
Nov 29, 2023
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Guided by machine learning, chemists at the Department of Energy's Oak Ridge National Laboratory designed a record-setting carbonaceous supercapacitor material that stores four times more energy than the best commercial material. ...
Analytical Chemistry
Nov 22, 2023
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In the high-stakes fight against climate change, the United States—and the planet—are at a moment that is both hopeful and harrowing.
Earth Sciences
Nov 15, 2023
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15
For photovoltaic power generation, pn junction is the core unit. The electric field in the junction can separate and transport the electron and the hole to negative and positive electrodes, respectively. Once the pn junction ...
Optics & Photonics
Nov 10, 2023
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13
Ultraviolet (UV) rays are electromagnetic waves with wavelengths ranging from 100 to 380 nanometers (nm). These wavelengths can be classified into three regions: UV-A (315–380 nm), UV-B (280–315 nm), and UV-C (100–280 ...
Optics & Photonics
Oct 20, 2023
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1
Formed by the coupling effect of contact electrification and electrostatic induction, triboelectric nanogenerators (TENG) effectively convert the most widely distributed micro-nano energy in our environment, including human ...
Nanophysics
Oct 17, 2023
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32
We live in an era of data deluge. The data centers that are operated to store and process this flood of data use a lot of electricity, which has been called a major contributor to environmental pollution. To overcome this ...
Condensed Matter
Oct 17, 2023
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Non-precious metal catalysts (NPMC) have strong potential in energy conversion devices due to their excellent oxygen reduction reaction (ORR) performance in fuel cells. Since in most NPMC materials, the accessible active ...
Analytical Chemistry
Oct 11, 2023
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14
Solar panel technology has advanced significantly in recent years, to the point where solar energy is the fastest-growing renewable power source. The solar panels we have today are a by-product of those used in space.
Space Exploration
Oct 6, 2023
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9
Communities with more socioeconomic vulnerability experience longer-duration power outages than more advantaged communities, according to a study. Research has shown that environmental disasters hit economically and socially ...
Social Sciences
Oct 4, 2023
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