Icebergs don’t just pose a risk to ships – they have a profound impact on the natural world and human societies.

From planting mangroves to dumping minerals in the ocean, there are lots of ideas for ocean carbon dioxide removal – and even more questions.

Plankton, some of the smallest organisms on Earth, are leading big changes in the ocean.

Iron in smoke and ash from wildfires can "fertilize" the oceans, providing nutrients for algae blooms that then may suck up carbon, research indicates.

Glaciers aren't sterile wastelands – they're chock-full of microscopic life.

These tiny organisms play a huge role in fighting climate change, but they're under threat.

Collecting sticky stuff from areas of the ocean that have no oxygen shed light on how these zones trap carbon in sediment and rocks.

Microscopic ocean phytoplankton feed a "biological pump" that carries carbon from the surface to deep waters. Scientists have found that this process stores much more carbon than previously thought.

The interaction between bacteria and algae in the world's oceans may play a role in cloud formation, new research indicates.

"Iron from hydrothermal vents can well up, travel across hundreds of miles of open ocean, and allow phytoplankton to thrive in some very unexpected places."