The 21st century abounds with challenges that mechanical engineers can help solve, in areas spanning energy generation, medical device development, climate change, automotive and aerospace vehicle design, manufacturing, and nanotechnology. By virtue of their ability to understand and solve important problems in these areas, mechanical engineers are well prepared to take leadership roles in industry, law, medicine, and government. Mechanical engineering is a good choice for students who enjoy math and science and have a desire to make an impact.