There are tears in the audience as Patrick Darling’s song begins to play. It’s a heartfelt song written for his great-grandfather, whom he never got the chance to meet. But this performance is emotional for another reason: It’s Darling’s first time on stage with his bandmates since he lost the ability to sing two years…
This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology. Sodium-ion batteries are making their way into cars—and the grid For decades, lithium-ion batteries have powered our phones, laptops, and electric vehicles. But lithium’s limited supply and volatile price have led the industry…