Data Science is dying out
- Data Scientists distinguish themselves from Analysts by knowing a bit more about programming.
- They distinguish themselves from Software Engineers by knowing less about programming.
- They differ from both in that Data Scientists usually are expected to have gone to grad school and know a thing or two more about math.
- The "Data Scientist" job title was a way for industry to hire academics to do the kind of computational modeling that PhD candidates usually do in academia.
- Now I know for a fact that once you give a group of people in the professional class a title and a decent salary, they'll make sure their field will continue to be needed, come hell or high water.
- Data Science is going nowhere, it's just that if you happen to not have Data Scientists on hand at your organization, don't fret, you still can get stuff done.
Why is nutrition so hard to study?
- Despite the many issues that nutrition scientists face, understanding which foods benefit or harm health is essential work.
- So, in “observational studies,” nutrition scientists look for links between what a person consumes and their current or future state of health.
- These issues prompted a highly critical study, which appeared in the journal PLOS One, to pull apart data from the National Health and Nutrition Examination Survey (NHANES).
- Confounding variables affect all areas of medical science, of course, but because diet and lifestyle are so intimately entwined, they are a particular hazard in nutritional research.
- One study that brings the confusion in nutritional science into stark relief involves a literature of research associated with 50 ingredients randomly selected from cookbooks.
More people are being diagnosed with coronavirus outside China than in — another indication that the virus is nearing pandemic status
- Outside Hubei province (where the virus originated) just 10 cases of COVID-19 were diagnosed in China on Tuesday.
- That is the largest number of fatalities outside of Hubei province, where more than 2,600 people are dead.
- Scientists aren't sure yet exactly how deadly COVID-19 really is, because it's such a new bug, but initial estimates from inside Hubei province suggest the fatality rate could be around 2%.
- COVID-19 seems to hit the elderly and people with pre-existing conditions especially hard (it's not been diagnosed very much in kids at all yet).
- That's why it's most important to wash your hands with soap and water (ideally, for long enough to sing "happy birthday to you" twice), and avoid touching your face, especially around the eyes, nose and mouth, where virus particles could sneak their way inside the body.
Using salt to fight cancer
- To control this, ion channels on the plasma membranes that surround our cells prevent salt from entering.
- SCNPs contain millions of sodium and chlorine atoms, but the ion channels responsible for keeping salt out do not recognize them in this form.
- They compared the growth of these tumors with those of mice in a control group who had received the same quantity of sodium chloride in a solution, rather than as nanoparticles.
- In the second part of the study, the scientists investigated the effects of cancer cells that had already been killed by SCNPs. They injected these cells into mice and found that the animals were more resistant to developing new cancer; in other words, the cells acted as a vaccine.
- This, they believe, is because when the SCNPs cause the cancer cells to die and burst open, they spark an immune response.
NASA's InSight lander on Mars has detected about 450 quakes. They suggest the planet is less Earth-like than we thought.
- Scientists have detected about 450 whispers and rumbles below Mars' surface, and they paint a picture of a planet with a moon-like, crumbling crust.
- So far, the biggest surprise is that seismic waves on Mars more closely resemble those of moon quakes than earthquakes — which probably means Mars' crust is more dry and broken up than we thought.
- Reading the seismic waves on Mars, scientists hope, will reveal similar clues about what the planet's inside looks like and how it's changing.
- On Earth, the source of seismic waves is easily detectable, since the crust is comprised of relatively uniform, solid rock (which has been melted and re-paved by volcanic activity over millions of years).
- Researchers expected quakes on Mars to fall more on the Earth-like end of the spectrum, since they thought the planets had similar crusts.