In the 21st century, I think the heroes will be the people who will improve the quality of life, fight poverty and introduce more sustainability.
I'm learning kite surfing. It's a little surfboard you have on your feet with straps, and you have a big kite like a power glider in the air that pulls you. You don't need waves to move, and it makes a big spray of water as you go.
What the history of aviation has brought in the 20th century should inspire us to be inventors and explorers ourselves in the new century.
Very often, human beings are living like on autopilot, reacting automatically with what happens. What interests me about the life of an explorer is you are in the unknown; you are out of your habits.
People put limitations on their creativity, believing they have to rely on what they know and what they have done.