Institution of Oceanography of the University of San Diego discovered between Santa Catalina Island and the Los Angeles coast thousands of DDT barrels discovered in the depths of California. They were found over 27,000 barrels that appear to contain DDT.
Eric Terrill, chief scientist of the expedition and director of the Marine Physical Laboratory at Scripps Institution of Oceanography, said: "Unfortunately, the Los Angeles basin has been an industrial waste dump for several decades, starting in the 1930s.
We found a large sample of debris. With the mapping of the entire area in very high resolution, we hope that the data will give indications for developing strategies with which to address the potential impacts of dumping."
Already in 2011 and 2013, David Valentine, a professor at the University of California at Santa Barbara, had discovered concentrated accumulations of DDT in the sediments of the same ocean region by intercepting 60 barrels on the sea floor.
Scientists have found high levels of DDT in water mammals including dolphins and sea lions, often the cause of cancer. An investigation by the Los Angeles Times found that shipping records from a disposal company supporting Montrose Chemical, a DDT company, show that 2,000 barrels of DDT-related sludge may have been spilled each month, from 1947 to 196, in a specific area designated and destined for landfill.
Pollution: by 2060 most of population at risk of infertility
Temporal trends in sperm count: a systematic review and meta-regression analysis is a study which show how from 1973 to 2011, the sperm count in men is dramatically dropped by about 60 %.
Professor Shanna H. Swan, a specialist in Reproductive Epidemiology at the Mount Sinai Icahn School of Medicine in New York said this is attributable to the pollutions. If this reduction continues over the next few decades, we risk encountering a concentration of spermatozoa so low that it even affects fertility.
Rresearchers said by 2060 humans could no longer produce enough sperm to reproduce. According to Swan, as early as 2045 most couples will need assisted fertilization to conceive, as natural sexual intercourse will become more and more complicated.
Article said it is not only the spread of pollutions that affects reproductive capacity, but also the radical change in lifestyle that has taken place over the last 50 years. Alcohol abuse, a sedentary lifestyle and an unbalanced diet are increasingly widespread behaviors.
The impact of these substances also affects other animals, as shown by the study on dogs Environmental chemicals in dog tests reflect their geographical source and may be associated with altered pathology published in Scientific Reports.
Scientists led by Professor Richard G. Lea have shown that man's best friend suffers from the same sperm drop observed in man. Studies on farmed mink have revealed an increasing spread of genital malformations, the spread of which is more marked even among animals exposed to wastewater, contaminated by our toxic chemical compounds.
Institutions such as the European Union are moving to regulate even more strictly the presence of these substances in everyday objects, in particular avoiding the replacement of harmful ones with equally harmful compounds. It will be a very dramatic scenario, as we often watch on the screen.