‘Ocean battery’ targets renewable energy dilemma

Good News Notes: “A wind turbine sitting idle on a calm day or spinning swiftly when power demand is already met poses a problem for renewables, and is one researchers think can be tackled under the sea. In one vision, offshore wind farms could use seawater to essentially store energy until it’s needed, helping wean humanity off fossil fuels….

Carbon-capture tech removes CO2 from the ocean by making seashells

Good News Notes: “Even as renewable energy and zero-emissions transportation scale up and the rest of the global economy slowly decarbonizes, it’s likely that the world will still need to suck an enormous amount of carbon dioxide out of the atmosphere to tackle climate change—10 billion metric tons per year by the middle of the…