Cholinergic system research may provide the key to treating and reversing this devastating disease.
Unsupported statement. There are many good reviews of cholinergic therapies for Alzheimer's disease. But it is also a very long standing theory and so I wouldn't characterize the opportunities as "exciting" as therapies have had modest effects to date.
much of the data are actually encouraging
This is a strong claim; a strong reference would be needed to back it up. In this article, the author provides 5 facts about the changing climate to back this assertion. This is far from sufficient to give credit to the author's claim, especially since several of these facts are only one aspect of the story, as shown by the scientists' comments below.
Man can't change climate