The first thing to remember about all things scientific is the phrase, “Subject to Change.” What we know and understand is always based on our best observations, information, and research. As mankind progresses, so does our understanding of things, which can turn our best guess upside down.
Fear not, science lovers! For science is still a great and wonderful thing, sure to compel “oohs” and “aahs” from crowds for millenia to come.
…but never forget, science is a journey, not a destination.
For further reading on NPR’s article:http://www.npr.org/blogs/krulwich/2011/04/14/135351303/the-triceratops-panic-why-does-science-keep-changing-its-mind