Have you ever wondered how big crystals form? Let’s talk about it this #MineralMonday.💎
Pegmatites produce large crystals—usually over ~1⁄2 inch (1 cm)—and are the final product of some cooling magmas. They’re found in veins, dikes, or pods at or near the margins of large igneous bodies. Large crystals and distinctive textures can form in pegmatites because high concentrations of water and certain chemical elements in their magmas reduce the number of crystal nuclei that form. Water also allows pockets to form where minerals, like this beryl (variety: aquamarine), can grow unimpeded as large well-defined crystals.
Photo: E. Louis/© AMNH
#NewYorkRocks #crystals #gems #minerals #NaturalHistory #amnh (at American Museum of Natural History)
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Long COVID: Majority of Patients Suffer From 2 Main Symptoms -
A third of patients with long COVID in a new Cambridge study said they lost their jobs because of the condition
Nearly two-thirds of people with long-term effects from COVID-19 experience problems with concentration and memory, according to a new study from Cambridge University.
In a study of 181 patients with what’s often called long COVID – most of whom had been infected at least six months before the research began – 78% reported difficulty concentrating, 69% reported brain fog (described as sluggish or “fuzzy” thinking) – 68% reported forgetfulness and 60% reported problems finding the right word in speech.
Though their symptoms were self-reported, the claims aligned with significantly lower scores in cognitive tests.
“This is important evidence that when people say they’re having cognitive difficulties post-COVID, these are not necessarily the result of anxiety or depression,” co-author Muzaffer Kaser, a psychiatrist, said in a March release. “The effects are measurable – something concerning is happening.”
Half of the patients reported difficulties in getting their symptoms taken seriously, according to a release from the school, suggesting the medical community doesn’t take cognitive issues as seriously as lung problems, fatigue or other symptoms.
According to the research, published in two studies in the journal Frontiers in Aging Neuroscience, more than half of the study’s participants have been unable to work for extended periods of time and a third said they lost their jobs due to their illness. …
(Source: CNET)
Hundreds of Chevron workers at California refinery go on strike -
… The union said it had negotiated a national agreement for oil workers on wages and working conditions, but about 200 individual bargaining units still had to negotiate local issues.
USW Local 5 representative B.K. White, a refinery operator who has worked for the company for 29 years, said Chevron failed to address worker fatigue and a lack of staffing.
“If we had more people and could get a better pay rate, maybe our members wouldn’t feel obligated to come in and work as many as 70 hours a week to make ends meet. We don’t believe that is safe,” White said.
Chevron said that in Richmond, “the union’s demands exceeded what the company believes to be reasonable and moved beyond what was agreed to as part of the national pattern bargaining agreement.”
The old contract with Chevron in Richmond expired 1 February and workers had been reporting to their jobs on a rolling 24-hour extension, the union said. …
(Source: theguardian.com)
The SEC wants companies to disclose how climate change is affecting them -
Every year, public companies in the U.S. are required to provide investors and regulators with detailed data about their financial performance and the risks they face. Soon, they may also have to disclose information about how they are dealing with climate change.
The U.S. Securities and Exchange Commission on Monday formally proposed new rules that would for the first time require businesses to report their greenhouse gas emissions, along with details of how climate change is affecting their businesses. …
(Source: NPR)
(via iahfy)
(via beforewhatgod)
