Water stopped cascading down Oroville Dam’s fractured main spillway Monday, revealing a gaping wound from a beating that lasted nearly three weeks. Dam operators gradually scaled back water releases to zero over a six-hour period, providing breathing room for construction crews trying to clear debris from a badly choked Feather River channel and restart the dam’s critically needed hydroelectric plant. The shutdown is expected to last about a week, which the state Department of Water Resources hopes will be enough time to bring the plant back into operation.

Some technologies just seem to make sense. But everything has to line up correctly for a technology to move forward. When I was in Switzerland five or six years ago, the Swiss were considering putting in pumped storage so that low-cost wind from the north and low-cost solar from the south could be stored and then delivered to the rest of the continent at peak times. In 2016, the 1000-MW Linthal pumped storage hydro power plant was successfully synchronized to the Swiss grid bringing this vision to pass.

Although California’s five-year drought has come to an end, how has it affected the state’s giant sequoia trees? In this video, we meet a scientist who is seeking to understand these seemingly indestructible giants. Although though the skies have finally opened and the rains have started to fall on California, more than 100 million trees died during the state’s historic five-year drought. Such a monumental loss of trees — trees are amongst the best, most consistent “living sponges” that sequester CO2 from the Earth’s atmosphere — accelerates global warming.