• Researchers Emphasize the Need to Monitor Rivers for Triclosan

    Ever heard of triclosan? As an antibacterial and antifungal agent, it is used in everything from toothpaste, to soaps, socks and trash bags. While the US Food and Drug Administration, the Environmental Protection Agency, and the European Union all regulate triclosan, the chemical is not monitored and often gets absorbed into sewage sludge after wastewater treatment. Researchers from Germany and Slovakia are claiming that triclosan is harmful to the ecology of rivers and are calling for further monitoring of the chemical. After monitoring the Elbe river basin, concentrations of the chemical at various test sites were found to exceed the predicted no-effect concentration for algal communities. From the 500 river basin-specific pollutants investigated, triclosan ranked sixth as one of the most particularly harmful substances in Europe. >> Read the Full Article
  • Bacteria Evolution

    The ancestors of modern bacteria were single-celled microorganisms that were the first forms of life to appear on Earth, about 4 billion years ago. For about 3 billion years, all organisms were microscopic, and bacteria and archaea were the dominant forms of life. Bacteria have a bad rap as agents of disease, but scientists are increasingly discovering their many benefits, such as maintaining a healthy gut. A new study now suggests that bacteria may also have helped kick off one of the key events in evolution: the leap from one-celled organisms to many-celled organisms, a development that eventually led to all larger multi-celled animals, including humans. >> Read the Full Article