Imagining the Wormhole (Literary Hub)
by Paul Halpern
A common science fiction trope has heroes traversing a wormhole to different galaxies. And, in fact, it was Carl Sagan’s research, conducted while writing one of his own novels, that first inspired physicists to explore the possibility that this kind of portal could really exist.

Consider the Baitfish (Slate)
by Russell Jacobs
Tiny fish like menhaden, sardines, and anchovies may not have the charisma of some of their larger neighbors. But it’s becoming increasingly clear how important they are to the vibrant life of the oceans.

The Upsides of “Bad” Emotions (The Conversation)
by Heather Lench
We all want to be happy—but there are reasons we often aren’t. Emotional states like sadness, anger, and anxiety trigger different ways of thinking and acting that may be exactly what we need to respond to life’s challenges.

Is the World Getting Medieval Again? (Vox)
by Joshua Keating
Before the modern system of nation-states emerged, a range of institutions might raise armies, organize courts, command individuals’ loyalty, and otherwise fill niches now occupied by national governments. Can neo-medievalism help us understand the world today?

Metaphors are Scaffolding for Our Thoughts (Aeon)
by Benjamin Santos Genta
Is dealing with cancer a war or a journey? Is crime a virus or a beast? The metaphors we use to describe things aren’t just colorful turns of phrase. They help structure the way we think about the world, and how we respond to challenges.

Got a hot tip about a well-researched story that belongs on this list? Email us here.