Dental plaque, gut bacteria and the slippery sheen on river rocks are all examples of biofilms, organized communities of microorganisms that colonize our bodies and the world around us. A recent study led by Penn State researchers ...
Cell & Microbiology
12 hours ago
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19
Northeastern researchers found in 2021 that an estimated 4 million to 10 million tons of plastic carbon enter the ocean each year. Much of it ends up floating in subtropical currents.
Environment
Dec 6, 2023
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1
To make fuel cells more affordable, researchers have spent decades searching for low-cost catalysts to replace platinum and other expensive metals.
Analytical Chemistry
Dec 5, 2023
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32
Researchers at The University of Alabama in Huntsville (UAH) have created a new kind of triboelectric nanogenerator (TENG) that produces electricity through the use of limestone putty, promising considerable cost savings ...
Nanomaterials
Dec 4, 2023
0
118
When microscopes struggle to pick up faint signals, it's like trying to spot subtle details in a painting or photograph without your glasses. For researchers, this makes it difficult to catch the small things happening in ...
Optics & Photonics
Dec 4, 2023
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57
Biomedical engineers at Duke University have developed an AI platform that autonomously compares molecules and learns from their variations to anticipate property differences critical to discovering new pharmaceuticals. The ...
Biochemistry
Dec 4, 2023
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50
Scientific debate is getting heated over what to do about airplane contrails—the wispy lines of water vapor you often see trailing behind a jet.
Environment
Dec 4, 2023
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66
Researchers from The Novo Nordisk Foundation Center for Biosustainability (DTU Biosustain) have developed an innovative fermentation process that produces natural betalain-type food colors. This groundbreaking technology ...
Cell & Microbiology
Dec 1, 2023
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14
The practice of keeping time hinges on stable oscillations. In a grandfather clock, the length of a second is marked by a single swing of the pendulum. In a digital watch, the vibrations of a quartz crystal mark much smaller ...
Optics & Photonics
Nov 30, 2023
1
38
Many people are familiar with the haunting images of wildlife—including sea turtles, dolphins and seals—tangled in abandoned fishing nets.
Analytical Chemistry
Nov 30, 2023
0
46
An engine is a mechanical device that produces some form of output from a given input. An engine whose purpose is to produce kinetic energy output from a fuel source is called a prime mover; alternatively, a motor is a device which produces kinetic energy from other forms of energy (such as electricity, a flow of hydraulic fluid or compressed air). A motor car (automobile) has a starter motor and motors to drive pumps (fuel, power steering, etc) – but the power plant that propels the car is called an engine. The term 'motor' was originally used to distinguish the new internal combustion engine -powered vehicles from earlier vehicles powered by a steam engine (as in steam roller and motor roller).
Military engines included siege engines, large catapults, trebuchets and battering rams.
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