Humans don't have hollow bones like birds do, so how big would our wings have to be to lift us off the ground?

According to Habib, bat-like wings would make more sense on humans. In this setup, the entire arm and hand would stretch out, creating that 20-foot wingspan. A fleshy membrane wing would cover ...

For the many wondrous things humans can do, we can't fly on our own. But if we could, how big would our wings be? Of course, the answer depends on the person's size. But someone who's about 155 ...