Science & Discovery News Today — September 13, 2026

As we delve into the wonders of the natural world and the intricacies of human history, today's headlines weave a fascinating narrative that spans millions of years and multiple disciplines. The discovery that ancient armored fish evolved two distinct ways to crush prey 385 million years ago offers a glimpse into the early evolution of life on Earth, highlighting the incredible adaptability and diversity of species. Meanwhile, a look into the ways people have used magic to protect their homes throughout history reveals the creative and often surprising methods that our ancestors employed to safeguard their living spaces, from the use of witch bottles to the deployment of 'hag stones'.

These stories, though seemingly disparate, are connected by a thread of curiosity and a desire to understand the complex mechanisms that govern our world. The quest to comprehend why some salivary glands fail, for instance, has led researchers to uncover the role of hidden cell stress, shedding light on the intricate processes that underlie human physiology. Similarly, the revelation that tiny cyanobacteria may be the secret heroes of ocean carbon sequestration underscores the critical importance of these microscopic organisms in regulating the Earth's climate. As we explore these diverse topics, we are reminded of the awe-inspiring complexity and beauty of the world around us, and the importance of continued scientific inquiry and discovery in unraveling its secrets.

Today's signal:
• Ancient armored fish evolved two distinct ways to crush prey 385 million years ago (phys.org)
• Six ways people have used magic to protect their homes throughout history—from witch bottles to 'hag stones' (phys.org)
• Why do some salivary glands fail? Researchers point to hidden cell stress (phys.org)
• Tiny cyanobacteria may be the secret heroes of ocean carbon sequestration (phys.org)