Worth giving a five star! I would not write a long para, over here, on how the book is, but definitely it's one of the best that I had read till date. Honestly, in the begining, by reading the title of the book I didn't get much interest, thought it would be a similar-usual biology type book dealing with evolution, but as I started reading (O MY GOODNESS, thank god I started reading), every chapters and every writing got me cling to it. I couldn't just stop myself. I find this book very worthy and would recommend to everyone. Believe me, you won't regret!