  At very small scales, thermodynamic energy exchanges like work and heat
become comparable to thermal energy of the system, which leads to unusual
phenomena like the transient violations of Second Law. We explore the generic
characters of such systems using the framework of Stochastic Thermodynamics and
provide a preliminary overview of the basic concepts. Here we have attempted to
put into simple terms some actively pursued topics like the arrow of time,
effect of information gain on Second Law, explanation of origin of life using
Crooks theorem and the thermodynamic uncertainty relations.
