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Dryden Aqua: we want to make the world a little better The mission of Dryden Aqua is to make the world a little better and we start by making swimming pools safer and environmentally sustainable. We are committed to fighting against pollution and to protect our environment from climate change. We are convinced to have found the main mechanism of global warming. In brief, our hypothesis is as following: The increase in the CO 2 content in the atmosphere is not directly related to the increased CO 2 from anthropogenic emissions. Scientific studies quantify that the burning of fossil fuels only accounts for between 1 % and a maximum of 5 % of all the CO 2 emissions into the atmosphere. This is a much lower amount than most appreciate. The UK Royal Society acknowledges that aquatic algae growth should have increased to compensate for the increased emissions of CO 2 . Instead, quite the reverse has happened; marine phytoplankton productivity in the oceans has actually declined. The increase of CO 2 in the atmosphere and acidification of the oceans is not caused by man-made CO 2 emissions but rather a decline in the ability of the ecosystem to metabolise the CO 2 in the atmosphere. Marine phytoplankton converts carbon dioxide into oxygen through photosynthesis. They are responsible for 90 % of the planets CO 2 fixation and oxygen production. However since the beginning of the chemical revolution around 1950, fixation of carbon dioxide and marine productivity has dropped by 40 % which is the primary reason for the increase in atmospheric carbon dioxide. Bioactive toxins such as PCB’s and PDBE fire retardants from municipal and industrial waste- water are increasing in all of the world’s oceans and are at concentrations that can supress pho- tosynthetic activity, even in the southern oceans. The decline in productivity reduces CO 2 fixation, resulting in higher concentrations of carbonic acid causing ocean acidification and an incre- ase in atmospheric CO 2 . The impact of aquatic pollution and ocean acidification is much more dramatic than appreciated. We know from expe- rience as Marine Biologists that at a pH of 7.9 the marine ecosystem will experience a cascade failure. We are already beginning to witness huge shifts in the marine environment with much greater numbers of jellyfish and squid and declining fish populations. At a pH of 7.9, carbonate eggs cannot form. Given that most marine animals and many plants have carbonate shells, we are looking at a complete collapse of the marine ecosystem and the possibility that the terrestrial ecosystem system will follow. Basically we have a situation that could be much worse than climate change and it’s happening now. Oceanic pH has already dropped from 8.3 to 8.09. If we act now to prevent bioactive discharges of aquatic pollutants from municipal wastewater and industrial effluent, we have a chance to re- verse the trend. We need the industry to stop using such toxic chemicals and we need to treat all of our wastewater. Not just in our own country but in every country; because we are all connec- ted to the same ocean, atmosphere and planet. We only have 25 years left to reverse the trend. Plankton in the North of Europe, taken by Envisat satellite. In the past century the phytoplankton content of the oceans has decreased in almost all regions of the world. (Foto: picture alliance/dpa) DRYDEN AQUA 3