Oxygen in the world's oceans is depleting at an unprecedented rate, leaving species gasping for breath and devastating marine habitats, a report issued at the annual UN climate talks in Madrid has warned.
Scientists say the long game for the Bahamas is very uncertain, just as the certainty grows linking climate change and a greater frequency of strong hurricanes. Science correspondent Miles O'Brien reports.
Political efforts to cool climate change are "fading" as things get worse, Antonio Guterres warned. He's visiting New Zealand en route to South Pacific islands that are at risk of being inundated by rising sea levels.
Two communities — one in Canada, one in the U.S. — share both a border along the St. Marys River and a toxic legacy that has contributed to high rates of cancer. Now the towns are banding together to fight a ferrochrome plant.