This video discusses the five most popular theories on the origin of life, based on evidence from biology. All of these theories have some level of supporting evidence, but none has been fully proven. The creationism theory, which is the oldest of the five, argues that life originated from God or a higher power. The biogénesis theory, which was developed in the 1860s by Louis Pasteur, suggests that life is created from pre-existing materials through a process of organic evolution. The theory of the synthesis of life, or quimio sintética, was proposed in 1924 by Alexander Paria. This theory takes as its starting point a very young earth and an atmosphere devoid of oxygen, and argues that organic compounds could form under these conditions. Finally, the hypothesis of panspermia - the transfer of life from outer space - has been around for a long time, but has recently gained renewed popularity due to advances in biological technology. All of these theories have some level of supporting evidence, but none has been fully proven.