The oceans absorb nearly 1/3 of our carbon emissions; they are literally the world's lungs. How does the sea 'breathe', and why does it do it?
Territory, food, commerce and conquest: what role have the seas played in the development of the nations we see today?
The tech required to explore the deepest parts of the ocean is coming on in leaps and bounds. What bizarre habitats and organisms have we found, and what still remains to be discovered?
There's so much left to learn about the sea and its organisms. Could the ocean be the source of the next drug to change medicine?
We know so little about the deep sea, and even less about what it's like beneath the ice of the Earth's polar regions. How does life flourish in one of the most inhospitable environments on the planet?
More than 75% of sea creatures produce their own light. How do they do it, and what can we learn from this incredible marine firework display?