The decline of key Atlantic currents is underway, and it's been flooding parts of the US for 20 years

** Scientists have found that the weakening of a major ocean current system in the Atlantic—called the AMOC—is directly tied to rising sea levels and more frequent flooding along the U.S. Northeast coast over the last two decades. Essentially, as this critical circulation slows down, water piles up along the eastern seaboard, making coastal communities more vulnerable to floods.