Invasion of the mind-altering parasites

[quote=Ed Yong]When people say that scientists are always changing their minds, it’s usually meant as a slight. How can anyone trust conclusions that are so prone to revision? But the fluctuating nature of science is a feature not a bug.

http://phenomena.nationalgeographic.com/2013/05/29/the-changing-science-of-just-about-birds-and-not-quite-birds/[/quote]

Or is it? Dun dun dah.

Engaging articles at Discover and National Geo.