Antarctica, in case you haven't heard, has a lot of ice. A large amount of it is in glaciers, and no Antarctic glacier is bigger than the mighty Thwaites Glacier, which is over 120 kilometers (75 miles) wide and about the same size as the UK in terms of area.
And unfortunately, that glacier is melting faster than predicted. The sea ice shelf in front of it is the thing that's melting first - and sea ice melting is a little less apocalyptic, since it's already displacing its own mass in water weight and won't cause sea level rise when it melts.
However, that sea ice is what hold the glacier back and keeps it from melting into the ocean, and with it gone, the glacier will be free do just that - which is a problem, as the water in this single glacier alone would raise global sea levels by an entire metre (3 feet).
The studies are at least helping us understand how tidal action is speeding up the melting process, but it may just be a case of us knowing more accurately how much time we have, rather than being able to stop it.
Way back in Issue 3 of Tales, we covered a neat tool that let you click on a map of the US and see which rivers and ocean a raindrop would work its way to over time based on the watersheds. Well, that tool is back and it's bigger than ever, with full global coverage.
Pulling together all this data seems like it was a mammoth task, and there's a page up with some of the background information, as well as some of the favourite paths from the people who worked on the project.
Just be careful if you're clicking around the slopes of Triple Divide Peak - the only place in the world that can be said to drain into one of three different oceans.