CFCs, greenhouse gases, and naturally occurring emissions of halogens will shape how volcanoes impact the ozone layer into the next century
How future volcanic eruptions will impact Earth's ozone layer
articles
Algal blooms cost Ohio homeowners $152 million over six years
In a new study, researchers at The Ohio State University estimate algal blooms at two Ohio lakes cost Ohio homeowners $152 million in lost property value over six years.
Meanwhile, a related study suggests that algae is driving anglers away from Lake Erie, causing fishing license sales to drop at least 10 percent every time a bloom reaches a moderate level of health risk. Based on those numbers, a computer model projects that a severe, summer-long bloom would cause up to $5.6 million in lost fishing revenue and associated expenditures by anglers.
Smoking Raises Risk of Aneurysm Recurrence After Endovascular Treatment
In a new study, researchers report people who have experienced an aneurysm have another reason to quit smoking.
Poisonings went hand in hand with the drinking water in Pompeii
The ancient Romans were famous for their advanced water supply. But the drinking water in the pipelines was probably poisoned on a scale that may have led to daily problems with vomiting, diarrhoea, and liver and kidney damage. This is the finding of analyses of water pipe from Pompeii.
- The concentrations were high and were definitely problematic for the ancient Romans. Their drinking water must have been decidedly hazardous to health.
Simulation shows the high cost of dementia, especially for families
A new simulation of how the costs and the course of the dementia epidemic affect U.S. families finds that neurodegenerative conditions can more than double the health care expenditures of aging and that the vast majority of that financial burden remains with families rather than government insurance programs.
Are stem cells the link between bacteria and cancer?
Gastric carcinoma is one of the most common causes of cancer-related deaths, primarily because most patients present at an advanced stage of the disease. The main cause of this cancer is the bacterium Helicobacter pylori, which chronically infects around half of all humans. However, unlike tumour viruses, bacteria do not deposit transforming genes in their host cells and how they are able to cause cancer has so far remained a mystery. An interdisciplinary research team at the Max Planck Institute in Berlin in collaboration with researchers in Stanford, California, has now discovered that the bacterium sends stem cell renewal in the stomach into overdrive – and stem cell turnover has been suspected by many scientists to play a role in the development of cancer. By showing that the stomach contains two different stem cell types, which respond differently to the same driver signal, they have uncovered a new mechanism of tissue plasticity. It allows tuning tissue renewal in response to bacterial infection.
