Wind turbines make clean energy from wind. They have very long blades. These blades spin around and around! But blades get old after many years. Workers in Germany cut open an old blade.
Inside the blade, they found a surprise! There was a lot of balsa wood. Balsa is the lightest wood in the world. They found 1.3 tons of this wood! That is very heavy.
The good news is this wood can be reused. People can make new things from it. They can turn it into house materials. This helps our planet stay clean and green! Recycling old blades is a great idea.
