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There are calls to ban vaping because it has pleasant flavors and an addictive component and that combination may lead to disease but while there are zero deaths attributable to nicotine so far, there is an actual socially acceptable carcinogen that also uses flavors to increase use - alcohol.Yet the future looks bleak if recent survey results hold true. They find that compared to just a generation ago, college students - and alcohol, like smoking, is most often a pediatric condition - are drinking less alcohol.

The SARS-CoV-2 virus, the 2019 form of coronavirus that has caused the COVID-19 pandemic, has led to a rush of studies searching for a vaccine to prevent infection and testing existing drugs to see which one can reduce the amount of virus in infected people. Drug development usually starts on a computer, then moves to cells and then animals. Animals, of course, are not little people, despite what anti-science activists like to claim in their war on food and chemicals, so if a drug works in all the preceding steps it will go to human clinical trials where it must survive the real challenge.

Mosquitoes spread malaria but because wealthy nations wiped it out before declaring insecticides bad, it's easy to forget that insecticides are the only effective way to control the mosquitoes that spread a disease which still kills 400,000 each year in developing nations.For poorer countries, there is good news. Scientists have created a new crystal form of the pyrethroid pesticide deltamethrin that is up to 12 times more effective against mosquitoes. Insecticides such as deltamethrin and DDT can prevent the spread of diseases carried by mosquitoes and are often sprayed indoors and on bed nets. Though DDT, for example, is banned in the United States for political reasons, our EPA writes the book on how to spray it indoors where malaria still exists. 

A small percentage of farmers engage in an alternative form of agriculture termed "organic" because they believe it is a more natural manufacturing process, since it was used in the past.The scientific flaws in that logic are well known, but the higher profits and environmental effects are real. Though California has only a tiny amount of organic produce, it requires 300 percent more pesticides to grow the same food as it would if they used regular farming. Organic farmers believe the higher profits are worth the higher economic and environmental costs.

Like with kids, when it comes to galaxies adolescent blemishes disappear over time.Exponential disks, common in spiral galaxies, dwarf elliptical galaxies and some irregular galaxies, appear smooth and have an exponential fade. How did they get it way?It's not possible to know but using inference, simulations help provide insight. Graohic showing how two sample star orbits are scattered from nearly circular orbits by the gravity of massive clumps within galaxies. Image: Illustration by Jian Wu/Iowa State University. Galaxy image from the Sloan Digital Sky Survey.

Bristol-Meyers Squibb has received the first drug regimen approved for mesothelioma in 16 years and the second FDA-approved systemic therapy for mesothelioma has gotten U.S. Food and Drug Administration approval.The combination therapy is Opdivo (nivolumab) and Yervoy (ipilimumab) for the first-line treatment of adults with malignant pleural mesothelioma that cannot be removed by surgery.

The overwhelming majority who have gotten or ever will get COVID-19, resulting from the third coronavirus pandemic, named SARS-CoV-2, of this century, won't know it. Most who are not asymptomatic will have it be the same as a cold.Yet a few will have severe reactions and require hospitalization. Just like with flu or any cause of respiratory distress, age is the biggest risk factor, as are preexisting conditions that can aggravate numerous health issues, but research by the COVID-19 Host Genetics Initiative has shown that genetic variants in one region on chromosome 3 impose a larger risk that their carriers will develop a severe form of the disease. Across all ages and strata of health.

In the Cueva de la Dehesilla of Cádiz on the Iberian Peninsula, two human skulls and a juvenile goat were discovered in a funerary structure dating to the Middle Neolithic period, 4800-4000 B.C.The archaeological structures and materials from a funerary ritual tell a tale of human and animal sacrifice, ancestral cults and propitiatory rituals, or they could be divine prayers in commemorative festivities.The two adult human skulls are an older male and a younger female. The female skull shows a depression in the frontal bone, which probably comes from an incomplete trepanation, as well as cuts in the occipital bone produced by decapitation.

Businesses would like to return to business as usual and government officials reliant on taxes desperately need a return to normal. The people arguing lockdowns need to occur indefinitely live on Twitter.How can it be done safely?The example of Bombardier Aviation in an analysis published in Canadian Medical Association Journal finds that creating "work bubbles" during the COVID-19 pandemic can help reduce the risk of company-wide outbreaks while helping essential businesses continue to function.

Hydroxychloroquine is an effective drug for the treatment of diseases like lupus and malaria and because it is used off-label for maladies that act in a biologically similar way to how COVID-19, caused by the SARS-CoV-2 virus, acts in the body, there has been discussion that clinical trials might show it having a positive therapeutic impact.Could it prevent COVID-19, though? A clinical trial of health care workers finds that it does not, though the good news is that because the trial was health care workers they had low rates of infection anyway, likely due to other prevention measures. Masks, hand-washing, and social distancing work.

To estimate infection rates of viruses like SARS-CoV-2, immunologists use a basic reproduction number, known as R0 (pronounced “R naught”) - an expression of the number of people likely to catch a disease from one contagious person - and a Susceptible-Infected-Removed (SIR) model.Yet as we have seen, those are only telling part of the science story. Coronavirus is in the same family as the common cold and for many COVID-19 will be just like the cold, and can spread like the cold. But when it comes to successful transmission, viruses only win they can optimize their aptitude to survive and reproduce in given conditions - which means they lose if we can optimize disease control measures.

In large systems of interacting particles in quantum mechanics, groups of particles can begin to behave like single particles. Physicists refer to such groups of particles as quasiparticles and while they live, they are useful in helping us understand superconductivity and superfluidity. But many quasiparticles die after less than one second. What kills them? How do quasiparticles die?A new paper goes beyond the usual suspect - quasiparticle decay into lower energy states - and identifies a new culprit: many-body dephasing.