Death is the ultimate obstacle that humans attempt to conquer. As much as hygiene and medicine progress, death always appears as an invincible enemy.
There are attaempts on several fronts to impart humans with immortality. One method is to preserve the body immediately after death using cryogenic technology so that some day when medicine has become much more advanced than today it can be revived and brought back to life.
Another speculation is to create a mechnism to upload all the information stored in the brain structure unto a digital media. This couldd effectively create a replica of the mind on the machine.
Hypothetically, if someday we really gain immortality, what will happen? Will we be happy? This is a serious philosophical question. The real problem is that in our current mindset, it seems the value of anything is determined by its scarcity. If something is ubiquitous, it is usually worthless. If we live forever, we may not perceive our life as precious as we do now.