@themissouriboy Carl Sagan (by and large) taught mainstream science. So it's not about Sagan, it's about Nature.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
@themissouriboy Carl Sagan (by and large) taught mainstream science. So it's not about Sagan, it's about Nature.