There are hundreds but they can be divided into some broad categories - such as biology, zoology, chemistry, physics, astronomy, archeology. There are many different answers to this question, all of...
8,000,568,984
As far as i know.. its 148 or more.
If it is, it's not a well publicised, nor advertised one. More than likely it's a journal, or a specialised publication.
magazines have many pages which can put very many advertisements which can save lots and lots of money.. $$$$
What Science Can Learn from the Arts
How Science Changed Our Understanding of Ourselves
Why Science Matters in Cooking
James Surowiecki on Having a Good Face