Antarctic Ocean Grows Saltier for First Time in 130,000 Years

A study published Wednesday in Nature reveals Antarctic Intermediate Water is rapidly growing saltier and deeper, a shift last seen 130,000 years ago. Researchers analyzed data from nearly 4,000 robotic floats to confirm core salinity rose approximately 0.002 grams of salt per pound of water with each passing decade since 2016, potentially triggering major climate tipping points.