The immune system does an outstanding job most of the time. To provide such excellent protection against bacteria, viruses, parasites, and fungi, our immune system must continuously learn.

Digital signatures can be applied to various kinds of digital documents and certificates. As such, they have several applications. Some of the most common use cases include: 

• Information Technology. To enhance the security of Internet communication systems.

As we mature, we generally become more emotionally stable, agreeable, and conscientious. But chronic job insecurity can stunt this emotional growth.

• The first step to do something about it is to know yourself and be aware of the pitfalls, then cultivate a gro...