Vox: These huge new wind turbines are a marvel. They’re also the future.

Oct. 23 — The history of wind power development has been the history of engineering taller and taller turbines with bigger and bigger blades. It’s a tricky and delicate business. Tall, skinny things, placed in higher winds, tend to bend and flex. When long turbine blades bend, they can crash into the tower, or hub, like this Danish system did in 2008 after its “brake” failed and it spun out of control:

— Vox