Add punctuation: He received his doctorate in 1939 at the age of 21 for a dissertation in physics On the Magnetic Scattering of Neutrons
A: He received his doctorate in 1939 at the age of 21 for a dissertation in physics On the Magnetic Scattering of Neutrons.

Add punctuation: Anyone who flies passengers from all over the world to their destination each day knows how different and individual people are Everyone has their own personal requirements for a planned trip Thats why airberlin now offers four individual fares on short and mediumhaul each including different services
A: Anyone who flies passengers from all over the world to their destination each day knows how different and individual people are. Everyone has their own personal requirements for a planned trip. That's why airberlin now offers four individual fares on short and medium-haul, each including different services.

Add punctuation: Nothing can come into existence out of chance occurrences or chaos
A:
Nothing can come into existence out of chance occurrences or chaos.