Gasoline fuels most light-duty vehicles, such as passenger cars and pickup trucks. Heavy-duty vehicles, like buses, delivery trucks, and long-haul tractor-trailers, typically run on diesel.Both fuel types are needed because gasoline and diesel engines have different strengths. As my automotive engineering students learn, this makes them suitable for different uses.Let’s start with what they have in common. Gas and diesel engines both work through a process called internal combustion.First, the ...read more
In medieval England, “handedness” determined whether one was considered virtuous or evil. The Latin root of “left” literally meant “sinister,” and folks who favored that hand were sometimes accused of witchcraft. Now, imaging technology can tell us how favoring one hand affected bone chemistry, according to a report in PLOS ONE. Researchers used relatively new imaging techniques to analyze the bones of centuries-old skeletons from a famous shipwreck, the Mary Rose. That ship, part of ...read more
Long-term high ultrafine particle concentrations in New York state neighborhoods are linked to higher numbers of deaths. That is the key finding of our new research, published in the Journal of Hazardous Materials.Our study shows that high levels of ultrafine particles in the atmosphere over long periods of time are significantly associated with increased non-accidental deaths, particularly from cardiovascular and respiratory diseases.Ultrafine particles are aerosols less than 0.1 micrometers, o ...read more
Stories define people – they shape our relationships, cultures, and societies. Unlike other skills replaced by technology, storytelling has remained uniquely human, setting people apart from machines. But now, even storytelling is being challenged. Artificial intelligence, powered by vast datasets, can generate stories that sometimes rival, or even surpass, those written by humans.Creative professionals have been among the first to feel the threat of AI. Last year, Hollywood screenwriters prot ...read more
The ancient world’s march toward urbanization was uneven. While Mesopotamia was sprouting city-states along the Tigris and Euphrates rivers and building massive monuments like the Ziggurat of Ur (in what is now Iraq), development in Arabia appears to have been smaller, slower, and more modest, according to a report in PLOS ONE.Urbanization to archeologists, isn’t just about the presence of massive monuments, though. Its signposts include temples and public buildings, signs of administration ...read more
Author Vishay SinghPosted on Categories Discover Magazine