Open Archive Day
A year ago, I enjoyed reading up about the late 19th / early 20th century pioneers of bathymetry, or the measurement of ocean depth (or sea floor topography, depending on whether you prefer your glass half full or half empty). Much of it sounded like a Jules Verne novel, with the sense of awe for the as yet unexplored which we appear to have forgotten, even though the sea floor remains poorly described to this day. So the vague memory I retain of the feature I wrote is that it was all about Captain Nemo, although in truth it probably wasn't.
The feature is now on open access so you can check for yourself:
How deep are the oceans?