At https://phys.org/print408197994.html … a study finds that rogue waves are not as rare as thought. One of the steepest yet recorded passed by the North Sea Ekofisk oil rig in late 2007, a wall of water moving at 40mph …
… rogue waves can occur twice daily at any given location during a storm.
At https://phys.org/print408179595.html … a huge crater in NE Siberia has opened up … 
… it is 1km in length and 328 feet deep, the sort of sink hole to get you worried. It started out in the 1960s – and has been growing since then in spite of the permafrost location. However, there is a silver lining in the most unlikely places and here it is the opportunity to study past climate. Two forest layers have been found and it is assumed at the moment they relate to the last two interglacials. However, it is the last Ice Age they are really interested in. They hope to discover local climate throughout the last 100,000 years – which means we should keep our eyes skinned for what they might unearth. For example, did the Late Glacial Maximum affect NE Siberia, or was there a temperate climate?