Which pathway of engineering should I go into?

Mechanical engineering is the discipline that involves the design, production, and operation of machinery. Mechanical engineers use these core principles along with tools like computer-aided design, and product lifecycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transport systems, aircraft, watercraft, robotics, medical devices, weapons, and others. Mechanical engineers are constantly pushing the boundaries of what is physically possible in order to produce safer, cheaper, and more efficient machines and mechanical systems. Some technologies at the cutting edge of mechanical engineering that you can try,
Micro electro-mechanical systems (MEMS)
Friction stir welding (FSW)
Mechatronics
Nanotechnology
Biomechanics
Computational fluid dynamics
Acoustical engineering.

There are many employment opportunities for degree-holders and Mechanical Engineering is one of it where you have immense chances and options to enhance your knowledge and career growth as well.

A Mechanical engineering education is a great pathway to begin a rewarding career of solving problems to help make people's lives better and more productive. It not only prepares you for an engineering career but can also serve as a valuable foundation for leadership and careers in any number of areas — industry, healthcare, academia, public service and even politics.

Mechanical engineering plays a critical role in solving the world's grand challenges by producing sustainable energy, providing a safe environment and clean water, building safe and effi cient transportation systems, designing new means of energy conversion and storage, and improving mechanical/electrical systems in homes and buildings. Emerging high technology fi elds of nano-materials and biomechanics are further examples of areas where mechanical engineering plays a vital role. Furthermore, established areas of mechanical engineering such as design, manufacturing, automation and control are essential elements to devising large-scale complex systems that drive the global economy.

http://www.learnhowtobecome.org/computer-engineer/

A Mechanical engineering education is a great pathway to begin a rewarding career of solving problems to help make people's lives better and more productive. It not only prepares you for an engineering career but can also serve as a valuable foundation for leadership and careers in any number of areas — industry, healthcare, academia, public service and even politics.

Mechanical engineering plays a critical role in solving the world's grand challenges by producing sustainable energy, providing a safe environment and clean water, building safe and effi cient transportation systems, designing new means of energy conversion and storage, and improving mechanical/electrical systems in homes and buildings. Emerging high technology fi elds of nano-materials and biomechanics are further examples of areas where mechanical engineering plays a vital role. Furthermore, established areas of mechanical engineering such as design, manufacturing, automation and control are essential elements to devising large-scale complex systems that drive the global economy.

This wide variety of careers and specialties — from medicine, to automotive, to energy, to aerospace — welcomes individuals with different interests and aptitudes. Mechanical engineers are not all alike, nor are the many educational paths you may choose to get there. You may want to pursue a 2-year degree or a 4-year degree. You may wish to focus more on hands-on, practical solutions to problems, or you may want to focus on a combined hands-on approach linked to theory and analysis. And after you complete your fi rst level of education, you may wish to continue, from Associate of Science (A.S.), to Bachelors of Science (B. S.), Masters of Science (M.S.), or Doctorate (Ph.D.) levels.

The most common paths to careers in mechanical engineering (ME) are through college-level programs in mechanical engineering (ME) and mechanical engineering technology (MET). There are many employment opportunities for degree-holders in both fi elds, starting with 2-year A.A.S programs in Engineering Technology, through Ph.D. programs in Mechanical Engineering (see diagram). The mechanical engineering spectrum continues to widen as technological development accelerates and professionals interface with other disciplines. That's why many graduates continue their education and pursue further degrees even after they've started working, depending on their workplace needs or specialties.