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Updated: 40 min 33 sec ago
If There Is An Arrow Of Time, How Might It Work?
To most physicists, time is a relative construct. A clock changes position in three real dimensions, the earth rotates. If the effects in the real world change, like gravity, so does the perception of time. That does not make time a 'fourth' dimension outside stories.
Yet a few theoretical physicists argue that because time does march on, it is like an arrow. This 'arrow of time' would move into the future, and to bolster their idea they invoke the second law of thermodynamics: the principle that microscopic arrangements of physical systems tend to increase in randomness, moving from order to disorder. The more disordered a system becomes, the more difficult it is for it to find its way back to an ordered state, and the stronger the arrow of time.
Yet a few theoretical physicists argue that because time does march on, it is like an arrow. This 'arrow of time' would move into the future, and to bolster their idea they invoke the second law of thermodynamics: the principle that microscopic arrangements of physical systems tend to increase in randomness, moving from order to disorder. The more disordered a system becomes, the more difficult it is for it to find its way back to an ordered state, and the stronger the arrow of time.
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Y Chromosome Evidence For South American Colonization 18,000 Years Ago
The history of humans is a history of expansion, from the recesses of Africa outward across the world. No one is really a native and yet everyone is, because all humans were first an invasive species but if you are born in a place, you are then native.
Some will claim their ancestors lived in a place 12,000 years ago, but unless they had an individual genomic analysis it's no more valid than saying they were descended from Genghis Khan, yet science is converging on ways to go beyond the silly '12 percent Irish' claims based on 23andMe or Ancestry and really determine if your ancestors were as close to the first humans as can exist.
Some will claim their ancestors lived in a place 12,000 years ago, but unless they had an individual genomic analysis it's no more valid than saying they were descended from Genghis Khan, yet science is converging on ways to go beyond the silly '12 percent Irish' claims based on 23andMe or Ancestry and really determine if your ancestors were as close to the first humans as can exist.
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The Science Of The Midday Siesta - Why Heat Makes Us Sleepy
If you get sleepy in the middle of hot days, you are not alone. You are not even alone in the animal kingdom.
Biology may be behind it.
We know that many people have a harder time sleeping in the summer and be slow to get out of bed on colder mornings and new study hopes to connect sensory neurons and neurons that control this cycle.
The work is only in fruit flies, so it goes in the exploratory pile despite the hyper-coverage such studies get in corporate media, but they found that fruit flies are pre-programmed to take a nap in the middle of the day. They believe there is a brain thermometer only active in hot temperatures.
Biology may be behind it.
We know that many people have a harder time sleeping in the summer and be slow to get out of bed on colder mornings and new study hopes to connect sensory neurons and neurons that control this cycle.
The work is only in fruit flies, so it goes in the exploratory pile despite the hyper-coverage such studies get in corporate media, but they found that fruit flies are pre-programmed to take a nap in the middle of the day. They believe there is a brain thermometer only active in hot temperatures.
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CDC Does Need To Be Reorganized - To Protect Us From Their Politicization Of Science
Beginning in 2010, the CDC, now under the moniker of the Centers for Disease Control and Prevention, used that new last part so aggressively that virtually no healthy person was going to be left in the US.
And it wasn't protecting the public, it was a money and power grab for the agency. Spending taxpayer money to try and convince Americans they had a manufactured conditioned called "pre-diabetes", all so they could go to Congress and get more money to fight the disease literally no other country accepted as anything but fantasy, was only one instance. They also claimed there was a vaping epidemic, and a prescription opioid epidemic, all the while being woefully unprepared for actual real diseases.
And it wasn't protecting the public, it was a money and power grab for the agency. Spending taxpayer money to try and convince Americans they had a manufactured conditioned called "pre-diabetes", all so they could go to Congress and get more money to fight the disease literally no other country accepted as anything but fantasy, was only one instance. They also claimed there was a vaping epidemic, and a prescription opioid epidemic, all the while being woefully unprepared for actual real diseases.
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Forced Vaccination Versus Body Autonomy In Germany
There is concern about US states making their own abortion laws in the US, but in Germany most abortion is illegal. It is only allowed for medical or criminal reasons within 12 weeks of conception, and lack of body autonomy may be why most Germans are fine with mandatory COVID-19 vaccines.
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Greatest Lupus Genetic Risk Factor Pathway Revealed
The molecular mechanism that drives the disease-causing effects of the most common genetic risk factor for lupus, HLA-DRB1*03:01, has been revealed in a new study.
Systemic lupus erythematosus is a common, incurable autoimmune disease that affects millions of individuals worldwide, with a particularly high prevalence among women. The genetic variant HLA-DRB1*03:01 is the greatest risk factor for the condition, which involves inflammation in many vital organs, and can lead to severe disability and death.
In the study, investigators found that a protein coded by that HLA variant triggers a cascade of molecular and cellular effects that can cause the inflammatory symptoms seen in lupus patients.
Systemic lupus erythematosus is a common, incurable autoimmune disease that affects millions of individuals worldwide, with a particularly high prevalence among women. The genetic variant HLA-DRB1*03:01 is the greatest risk factor for the condition, which involves inflammation in many vital organs, and can lead to severe disability and death.
In the study, investigators found that a protein coded by that HLA variant triggers a cascade of molecular and cellular effects that can cause the inflammatory symptoms seen in lupus patients.
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Physician Reluctance To Discuss Anal Sex Puts Patients At Risk
Hot on the heels of COVID-19, Monkeypox is in the news for an alarming spread among people who engage in risky sexual behavior, because it is transmitted primarily through direct contact with infectious sores, scabs, or body fluids.
Healthcare professionals, particularly those in general practice, gastroenterology, and colorectal surgery, are going to need to discuss sexual behavior to make patients better informed. A new analysis of survey results finds that applies to young heterosexual women as well.
Healthcare professionals, particularly those in general practice, gastroenterology, and colorectal surgery, are going to need to discuss sexual behavior to make patients better informed. A new analysis of survey results finds that applies to young heterosexual women as well.
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AI Algorithm Detects Brain Abnormalities - And May Help On The Road To Curing Epilepsy
The Multicentre Epilepsy Lesion Detection project (MELD) used over 1,000 patient MRI scans from 22 global epilepsy centers to develop an algorithm which provides reports of where abnormalities are in cases of drug-resistant focal cortical dysplasia (FCD) – a leading cause of epilepsy.
Around 1 percent of the world’s population have the serious neurological condition epilepsy, that is characterized by frequent seizures. While drugs treatments are available for the majority of people with epilepsy, 20 to 30 percent do not respond to medications.
Around 1 percent of the world’s population have the serious neurological condition epilepsy, that is characterized by frequent seizures. While drugs treatments are available for the majority of people with epilepsy, 20 to 30 percent do not respond to medications.
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Exploiting Nuisances
Today I am back from one of the most interesting workshops I ever attended to, and I wish to share some thoughts I had on possible ways to enhance our research of new ideas for future particle detectors with you. Those ideas come from discussions with other participants to the workshop, or just from re-digesting things I have been pondering over for a while.
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Self-Pollinating Plant Has Loss Of Genetic Variation Without External Pollinators
An experiment found that selfing” monkeyflower plants lost 13 percent to 24 percent of their genetic variation compared to another group that were propagated by bumble bees.
Genetic variation is important to respond to changes in nature or the overall environment. The good news is that they used bumblebees and though they claim they are in decline, evidence does not show that, so the plants are not at short term risk. Even better, pollination is not done by bumblebees alone, there are over 25,000 species of just bees, and lots of other insects pollinate. An experiment outside a closed greenhouse would show that.
Genetic variation is important to respond to changes in nature or the overall environment. The good news is that they used bumblebees and though they claim they are in decline, evidence does not show that, so the plants are not at short term risk. Even better, pollination is not done by bumblebees alone, there are over 25,000 species of just bees, and lots of other insects pollinate. An experiment outside a closed greenhouse would show that.
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COVID-19: Paying People To Stay Home Helped Mental Health – But Not As Much As Working
In March 2020, a few days before lockdown was introduced, the UK government launched the Coronavirus Job Retention Scheme, widely referred to as “furlough”. This scheme provided employees who were unable to work due to the pandemic with 80% of their pay (capped at £2,500 per month).
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Vaping Isn't A Gateway To Smoking But Marijuana May Be A Gateway To Vaping
WNBA star Brittney Griner is in a Russian jail because the laws of the country you enter no matter what country you live in. A visitor to the US with banned substances is going to jail the same way. Yet to many Americans, what she had is no problem. She was not smuggling drugs, she had cannabis oil used for vaping.
In that, she is hardy alone. Much like medical marijuana prescriptions were overwhelmingly obtained by young men while pain prescriptions are overwhelmingly for older women, there is a clear demographic who take up vaping for the cannabis, not to quit smoking or reduce harm by replacing carcinogenic smoke with nicotine vapor.
In that, she is hardy alone. Much like medical marijuana prescriptions were overwhelmingly obtained by young men while pain prescriptions are overwhelmingly for older women, there is a clear demographic who take up vaping for the cannabis, not to quit smoking or reduce harm by replacing carcinogenic smoke with nicotine vapor.
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Follicle Stimulating Hormone May Increase Risk Of Obesity After Menopause
Obesity is correlated to risk for breast cancer after menopause and new study suggests that this adiposity is related to the follicle stimulating hormone (FSH).
It is only an observational study, in the exploratory section and not causal, but the authors say their examination of hormone levels from samples stored in a Women’s Health Initiative biobank is the largest study of its kind in older women.
A hormone released by the pituitary gland, FSH plays an important role in female development and reproduction by stimulating growth of the ovarian follicle before ovulation.
It is only an observational study, in the exploratory section and not causal, but the authors say their examination of hormone levels from samples stored in a Women’s Health Initiative biobank is the largest study of its kind in older women.
A hormone released by the pituitary gland, FSH plays an important role in female development and reproduction by stimulating growth of the ovarian follicle before ovulation.
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Food Science: New Fix For Nature's Wasting Of Water During Photosynthesis
The researchers confirmed there is a system in place that is working to limit the amount of water being lost from the leaf, but what’s causing it is not settled. They believe that water conduits, called aquaporins, located in the cell membranes are responsible.
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Lightning, Not Utilities, Are Major Cause Of California Fires
California is primarily a desert and with no way to generate enough of its own electricity, the state must run power lines from other states through dry areas to keep a growing population in air conditioning. When wildfires occur the state routinely blames utilities and since utilities are created and managed by government fiat, utilities rarely note that they are not allowed to own power lines in many cases, and environmental laws restrict clearing trees and brush near them. The state instead sues, gets a win in a politically sympathetic court, the utility goes into bankruptcy and then emerges and the whole process starts over.
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About Taiwan
“We got rich fast here,” a man in Beijing told me, “and we’re fast getting richer. Those lazy Taiwanese aren’t getting richer at all.” It is fashionable on the mainland to diss Taiwan, but – as I was too polite to inform my interlocutor – Taiwan residents have created a fine civil society and have learned to get along well with each other, tasks that are much harder than just getting rich.
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How Whales Evolved To See In The Deep
Our planet’s origins and its ancient history has fascinated human beings since the dawn of civilization.
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Previously Unknown Mechanism In Plant Meiosis Discovered
Cells transform from one type into another and activation of a particular set of genes dictates how cells specialize in performing specific tasks and determines when they divide or when they differentiate.
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