The first episode reveal many interesting things about Thermodynamics and throws light on the Second Law of Thermodynamics, Carnot theorem and entropy.For someone who has even a little bit knowledge about thermodynamics it will be very interesting and all the interesting and fascinating facts about the scientists make it more enjoyable.The second episode is about Information and it's significance in science and technology it very successfully explains what information means and how powerful it can be.The best part was about Maxwell's Demon.It is nicely presented and use of thermal imagery makes it more interesting.All in all a very nice presentation by BBC.