There are growing fears of job cuts and the replacement of robots and systems by humans, the same fears our ancestors had when they learned about computers in the 1940s and 1950s.

But like the industrial revolution comes the modern digital revolution to abolish jobs, and in contrast to create new jobs that may not occur to us.

These are six future jobs you may want to think about for you or your children.

1- Alternative Energy Engineer
As fossil fuels run out, alternative sources of energy will have to be found. This industry will be constantly growing in the future, attracting many recruitment experiences.

From renewable sources of energy to other undiscovered energy sources, alternative energy will be the future. Here comes the role of an alternative energy engineer.

Such engineers will specialize in this area and will be responsible for energy in everything from generating sites to power plants for cities. They will be asked to assess and design the best sustainable energy sources for society as a whole.

Fields of specialization are already available at the Massachusetts Institute of Technology, the University of Texas and Austin.

2- Waste Solutions Engineer

Human beings produce an estimated 1.1 billion kilograms of waste each year. Most of this is buried simply underground, but there is a growing industry for reuse, recycling or burning for energy.

It is clear that just burying it is very wasteful and unsustainable especially in the long term. Human needs innovative solutions to discharge these wastes.

This is what future waste engineers do. Where they can devise sustainable technologies and solutions to discharge or recycle these wastes so that they can be utilized.

The word "waste" may change in terms of improving the job title, but the future of this profession is promising in terms of working conditions and salaries.

Currently, there are a few institutions that offer similar certificates in this field. Is likely to be a sub-specialty of current engineering degrees such as civil engineering or chemical engineering.

Some of the best universities in the world are studying these disciplines, MIT, Stanford University and Cambridge University in the UK.

3 - Specialist member industry
There is an increasing need for alternative members every day. A new donor is added to the transplant waiting lists every 12 minutes or so.

Here, the need to print or develop the organ industry is on demand, and future organ manufacturers must be able to create new organs and parts of patient stem cells and other substances that have not yet been discovered.

This may be one of the most interesting and rewarding career options in the near future.

Candidates will clearly need a strong background in science, technology, engineering and mathematics with a particular focus on biology, genetics and biomedical engineering.

The world's leading institutions include Harvard University, Johns Hopkins University and Duke University in North Carolina.

4- Internet repair technician for things
Calling plumbers or other technicians when something goes wrong with your home appliances is common practice today. But when our homes are gradually "smarter", what will we do when Internet tools miss our things or are hacked?

An Internet repair technologist may become an actual function in the future. The security of these smart things at home is a real daily concern, and here the need arises for such technicians.

Like any Internet stuff repair technician, you will be responsible for thwarting hackers before they cause any damage and repair any damage you can not prevent.

Candidates need a strong background in science, technology, innovation, critical thinking and information technology.

Current relevant disciplines overlap between computer science, computer engineering and mechanical engineering.

The Massachusetts Institute of Technology, Boston University and Carnegie have reached the highest rank for these disciplines around the world.

5- Private aviation instructors
While the flight instructors are already there, the long-awaited personal aviation vehicle revolution will need someone to teach others how to fly.

Lessons will cover the basics of flying vehicles, but they may also need to include instructions on navigation and aviation safety among other skills.

This will clearly require background in basic subjects such as mathematics, technology, critical thinking, interpersonal skills, and other related topics.

It may also require experience in areas such as communications, physics, computer science and of course experimentation.

6. Commercial astronaut
It may be part of the list of future jobs in space. As entrepreneurs such as Elon Mask and Richard Branson go on with their commercial space programs, civil space transportation may become a reality soon.

But the pioneers of these commercial spacecraft will need some training and specialized education before allowing adventurous individuals to go into space.

The trainers need to be trained to train astronauts, and they will also need other aviation training skills very much like commercial jet pilots today.

It is likely that this profession will be incredibly difficult and rewarding and will be active in space.

This type of profession requires candidates to have strong backgrounds in the basic principles of science, technology and mathematics, and are likely to need university degrees in areas such as space engineering, physics and computer science. You may also need to enjoy excellent physical and mental health.