The oceans have been much warmer than average for the past two years, and the planet just set another global heat record. What’s going on?

It's the first time in recorded history that the planet was above a hoped-for limit to warming for an entire year.

This past year, 2024, was the warmest ever measured for the global ocean, following a record-breaking 2023. In fact, every decade since 1984, when satellite record keeping of ocean temperatures started,