The presence of MEF in raw and sewage waters has been detected worldwide at concentrations exceeding the predicted no-effect concentration.
Polychlorinated biphenyls (PCBs) are, together with DDT (dichlorodiphenyltrichloroethane) and DDT-related chemicals, the most dominating classes of environmental pollutants worldwide, with concentrations varying in wildlife and in humans from different areas of the globe (Damstra et al. 2002).
Despite a very large number of scientific journals (probably exceeding 100,000 worldwide), the concentration of scientific information is skewed to a minority of journals that publish the majority of the articles (Bradford's law) and receive the majority of the citations.
The number of stations monitoring atmospheric methane concentrations worldwide is very few.
They analyzed the samples for isotopes of thorium — an element that exists in windblown dust worldwide, at known concentrations.
They brought the samples back to the lab and analyzed their chemical composition, including isotopes of thorium — an element that exists in windblown dust worldwide, at known concentrations.
The dangers of climate change are rising as the burning of fossil fuels and deforestation worldwide boost atmospheric concentrations of carbon dioxide.
According to UN estimates in 2002, there were between 20 million and 25 million IDPs worldwide, with major concentrations in The Sudan, Angola, Colombia, the Democratic Republic of the Congo, Afghanistan, Sri Lanka, Bosnia and Herzegovina, and countries of the former Soviet Union.
We derived population attributable fractions (PAFs) for every country based on estimated worldwide ambient PM2.5 concentrations.
With the large number of people exposed to these arsenic concentrations worldwide the public health consequences of arsenic in drinking water are substantial.
Clark et al. (2011) estimated median intakes of DEHP of 11.0 µg/kg-day, using worldwide data on concentrations of DEHP in exposure media in combination with contact rates.
