How many specimens does the natural history have?

Over 70 million: http://www.nhm.ac.uk/nature-online/collections-at-the-museum/intro-to-our-collections/index.html

just look at it as if it is the 'story of nature'

i was just gazing at my periodic table and i realized that there are actually 20 artificially prepared elements just like to keep you up to date :)

it was all due to the Empire, society and the people wanted to celebrate Britain's greatness. the building itself is an architectural wonder in its own right

To much to count