Event: The Sarandí Canal in Avellaneda, Buenos Aires, turned red three days ago, prompting environmental investigations. Officials suspect aniline, a toxic chemical used in dyes. Residents reported being awakened by strong odors from the waterway. Context: This occurrence underscores persistent environmental issues. Since the 1990s, residents have lodged complaints against local factories. The canal has shown various colors in the past, such as gray, green, and violet, revealing an ongoing pollution concern.