More than likely, you’ve only seen a four-winged airplane in old photographs. Today’s airplanes usually have two wings, and if you’re lucky to see a four-winger, it’s probably an older aircraft anyway. But why did older airplanes have four wings, and why did that change to two?
New eBook: ‘Cryptocurrency 101’
Don't want to lose your dough to crypto? Check out my new eBook, "Cryptocurrency 101." I walk you through buying, selling, mining and more!