A new paper in Health, Risk&Society
reports that women concerned about breast cancer often go to "Dr. Google" first
but how much they trust it varies - more educated women, for example, trust it more, while less educated women would rather see a doctor.
Oxygen in the Earth’s atmosphere is necessary for complex forms of life, which use it during aerobic respiration to make energy. The levels of oxygen dramatically rose in the atmosphere around 2.4 billion years ago, and speculation is that is when organisms called cyanobacteria, which perform the same type of organic photosynthesis that all plants do today, first evolved, and could perform oxygen-producing (oxygenic) photosynthesis.
Perhaps cyanobacteria could have evolved before 2.4 billion years ago but something prevented oxygen from accumulating in the air.
A polio vaccine that doesn't require refrigeration could be used all over the world, and that would bring an end to the devastating disease.
With just 22 reported cases worldwide in 2017, the highly infectious disease, which causes lifelong paralysis and disability mostly in young children, is on the brink of complete eradication. Yet in Nigeria, Papua New Guinea, Syria and Pakistan, countries where vaccination rates are spotty, young children remain at risk.
A biosynthetic pathway in bacteria includes a a carboxylase enzyme which adds CO2 to a precursor molecule, producing a highly unusual antibiotic called malonomycin.
Unchecked antibiotic resistance could result in an estimated 10 million deaths every year by 2050, while guesses on cost to the global economy go as high as $70 trillion in lost productivity.
The researchers found that CO2 was introduced into the malonomycin structure, by a carboxylase enzyme that has never been characterized in bacteria before. Malonomycin carboxylase is most similar to a carboxylase enzyme in human cells which uses vitamin K to add CO2 to proteins in our bodies, triggering essential physiological responses including blood coagulation.
What factors sustain the diversity of life on our planet? You might be surprised to learn one answer is sexual harassment.
After 32 people were infected with the outbreak strain of Shiga toxin-producing E. coli O157:H7 in 11 states between October 8th to October 31st, the CDC is now warning people about Romaine lettuce. All of it, whole heads of romaine, hearts of romaine, and bags and boxes of precut lettuce and salad mixes that contain romaine, including baby romaine, spring mix, and Caesar salad, because no common grower, supplier, distributor, or brand of romaine lettuce has been identified.
If you keep lettuce that long, anyway. The CDC is great about food warnings that are weeks too late, the same thing happened last year, only then they warned people about the November outbreak in January so this is an improvement.