Extra Credit: Our pick of stories from around the web that bridge the gap between news and scholarship. Brought to you each Tuesday from the editors of JSTOR Daily.

The limits of a crucial study (the New York Times)
by Sandeep Jauhar
How a decades-long research project revolutionized our understanding of heart disease—while still missing some really important things.

Punctuation and the meaning of texts (Pacific Standard)
by Tom Jacobs
When you respond to a friend’s text message, do you put a period at the end? A new study suggests you might want to rethink that.

The moral calculus of destroying Alderaan (the Washington Post)
by Patrick Thaddeus Jackson and Daniel Nexon
Political scientists like to make analogies involving fictional universes like those of Star Wars, Harry Potter, or The Lord of the Rings. Two scholars argue that successful comparisons require taking the fictions’ internal logic seriously.

The climate change diet (The Conversation)
by Elliott Campbell
Research shows our food choices are a big part of how much we contribute to global carbon emissions. What can we change if we want a lighter footprint?

Why doctors prescribe antibiotics patients don’t need (Vox)
By Julia Belluz
Even though antibiotics are useless against colds and the flu, prescriptions for the drugs still rise a lot every winter. Why do doctors keep prescribing them? Research suggest a few reasons, including the fact that they’re not allowed to prescribe placebos.

Have you seen a story online that does a good job of bridging the gap between the news and scholarship? Or something that seems particularly well-researched? Let us know and we may include it in next week’s roundup. Email us at jstordaily_submissions (at) jstor (dot) org.