We certainly do not need to look back at the controversial issues to understand the scopes of the problem; we have got a lot of them now. Nevertheless, it might be useful sometimes, to recall how these issues can be resolved in clear and transparent...
Enzymes are the workers in our body that make everything function, by enabling chemical reactions. All living cells contain enzymes. They are hard to visualize, since they are not something tangible, but our lives depend on them....