It's hard to give a full summary because the man talks about various subjects. One of the subjects is that people zealously trust to modern science, but many things that scientists are advocate are not provable. Ones believe in God, others - in the Big Bang, but it is only the question of believing, but not knowing. People often confuse things and concepts of `knowing' and `believing'. What we know eventually? Also the author talks about Darwin's evolutionary theory, which has many lacks, and how it came into existence.
Unfortunately I can't describe all the topics of this video, but if anyone after watching first 10 minutes will be interested, this would be good, I think