Will future humans look different?

Science fiction takes us tens of thousands of years into the future but sometimes imagines the range of human physical appearance will be about the same. Will humans look different in the future? Will we be 15 feet tall, or have heads like the grey aliens?

Further Reading - What Is "Healthy" Food?

There's a lot of nutritional, environmental and economic research being done on proteins. Read about protein in this Fw:Thinking blog post.