'Game changer' e-moped batteries spread from Taiwan across Asia
Every day, Aiden Lee joins the hundreds of thousands of people getting around Taipei on two wheels.
Jan 19, 2022
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Every day, Aiden Lee joins the hundreds of thousands of people getting around Taipei on two wheels.
Jan 19, 2022
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With today's high oil prices and record gas prices, it is easy to forget that the situation was reversed as recently as two years ago. At the end of 2019, an over-supply of fossil fuels had left producers concerned about ...
Jan 7, 2022
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A wind turbine sitting idle on a calm day or spinning swiftly when power demand is already met poses a problem for renewables, and is one researchers think can be tackled under the sea.
Jan 7, 2022
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Electronics giant Sony unveiled Tuesday a new prototype of its Vision-S electric vehicle and announced the founding of a company to explore jumping into the rapidly growing market.
Jan 5, 2022
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Denmark's government wants to drop fossil fuels in domestic air travel by 2030 in its most recent push to meet its climate targets.
Jan 3, 2022
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Germany will shut down three nuclear power plants on Friday even as Europe faces one of its worst ever energy crises, following Angela Merkel's timetable for phasing out atomic energy.
Dec 31, 2021
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With new major spending packages investing billions of dollars in electric vehicles in the U.S., some analysts have raised concerns over how green the electric vehicle industry actually is, focusing particularly on indirect ...
Dec 21, 2021
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The use of hydrogen as a replacement for fossil fuels has the potential to lower greenhouse gas (GHG) emissions and contribute to more sustainable energy systems.
Dec 13, 2021
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According to the World Meteorological Organization, greenhouse gas concentrations have reached a record high. In the case of carbon dioxide (CO2),the growth in 2020 exceeded the average for the last decade; despite a 5.6% ...
Dec 8, 2021
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Ambitions to make hydrogen a key energy carrier for a climate friendly future are misguided, says Anthony Patt. Wherever possible, including ground transportation and heating, we should replace fossil fuels with the direct ...
Nov 24, 2021
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Fossils (from Latin fossus, literally "having been dug up") are the preserved remains or traces of animals, plants, and other organisms from the remote past. The totality of fossils, both discovered and undiscovered, and their placement in fossiliferous (fossil-containing) rock formations and sedimentary layers (strata) is known as the fossil record. The study of fossils across geological time, how they were formed, and the evolutionary relationships between taxa (phylogeny) are some of the most important functions of the science of paleontology. Such a preserved specimen is called a "fossil" if it is older than some minimum age, most often the arbitrary date of 10,000 years ago. Hence, fossils range in age from the youngest at the start of the Holocene Epoch to the oldest from the Archaean Eon several billion years old. The observations that certain fossils were associated with certain rock strata led early geologists to recognize a geological timescale in the 19th century. The development of radiometric dating techniques in the early 20th century allowed geologists to determine the numerical or "absolute" age of the various strata and thereby the included fossils.
Like extant organisms, fossils vary in size from microscopic, such as single bacterial cells only one micrometer in diameter, to gigantic, such as dinosaurs and trees many meters long and weighing many tons. A fossil normally preserves only a portion of the deceased organism, usually that portion that was partially mineralized during life, such as the bones and teeth of vertebrates, or the chitinous exoskeletons of invertebrates. Preservation of soft tissues is rare in the fossil record. Fossils may also consist of the marks left behind by the organism while it was alive, such as the footprint or feces (coprolites) of a reptile. These types of fossil are called trace fossils (or ichnofossils), as opposed to body fossils. Finally, past life leaves some markers that cannot be seen but can be detected in the form of biochemical signals; these are known as chemofossils or biomarkers.
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