Sewage overflows from Tijuana have been contaminating Imperial Beach for many decades. The problem recently reached crisis levels, with city leaders calling on the state and federal governments for more funds to fix the aging sewage infrastructure on both sides of the border. By causing sea levels to rise, climate change also plays a role in compromising the sewage infrastructure of Imperial Beach, according to a new study in the journal Sustainable Cities and Society. [Researchers] examine how rising sea levels impact sewer pipes in the city and what this means for the future.