August 26, 2016; 2:02 AM ET
Following a taste of autumn chill to start the week, is summer heat and humidity over for the northeastern United States? more >
Hot and humid today
It's relatively common to find debris from rocket launches in the waters off Cape Canaveral in Florida, but divers exploring the seabed recently uncovered artifacts.
The coastal waters around Rio de Janeiro, where many Olympic water competitions will soon take place, are reportedly teeming with harmful viruses and bacteria.