Study finds ocean contaminants can become more toxic over time

A new study reveals that trace metals like lead, arsenic, and mercury in ocean water can become more toxic over time due to factors such as ocean warming and acidity. These conditions increase the bioavailability of these harmful elements. Human activities have significantly raised the levels of toxic metals in oceans, with lead increasing tenfold and mercury by three to seven times since pre-industrial times. The study highlights that melting glaciers and coastal erosion are also contributing to this problem. Researchers emphasize the need for more studies on how climate change affects ocean contaminants. They call for better understanding of the interactions between pollutants and climate change to protect ecosystems and human health.