DNA Structure Revisited, Ultra-Fast Crow Decisions, and Poetry as Science Action – AAAS Science Podcast Oct 22, 2026

Overview

The Science Podcast for October 22, 2026, presents three distinct but interconnected segments: a revisionist look at the discovery narrative of DNA’s structure, new findings on the speed and mechanics of decision making in crow brains, and a thoughtful dialogue on how poetry can inspire science-based action and policy. Tim Appenzeller discusses archival evidence that Rosalind Franklin understood key aspects of DNA’s helicity from photograph 49, challenging the common narrative around photograph 51 and Watson’s epiphany. In a separate interview, Andreas Nieder explains how carrion crows accumulate sensory evidence to decide left or right with remarkable speed. The episode closes with a conversation on poetry’s role in science through a Kent State poetry-science collaboration and a monarch bear poem read by Lara Volsky.

• DNA structure narrative revised with archival notes indicating helix from photograph 49
• Crows show ultra-fast perceptual decisions with monkey-like accuracy
• Poetry as a catalyst for meaningful science engagement and action

DNA Structure Update

The podcast opens with Tim Appenzeller examining the decades-long story of DNA’s structure, highlighting Rosalind Franklin’s role as an accomplished experimentalist whose data were foundational to Watson and Crick’s model. A new archival analysis shows that photograph 49, taken days before photograph 51, contains Franklin’s extensive notes indicating a helically arranged molecule and even estimating the DNA turn length of 34 Angstroms. The discussion clarifies that Franklin planned to publish, that she published a related paper concurrently with Watson and Crick, and that Watson’s public narrative of a sudden epiphany often downplayed Franklin’s understanding. The segment emphasizes justice for Franklin as a fully engaged participant in this landmark discovery, countering stories of data “theft” or interpretive passivity.

Ultra-Fast Decision Making in Crow Brains

In the crow segment, Andreas Nieder describes experiments with two carrion crows where subjects viewed moving dots and chose a left or right response via a touch monitor. Recording from neurons in the Nidopallium caudolaterale, the crow’s executive brain region, Nieder reports average decision times of about 235 milliseconds, roughly twice as fast as primates in similar tasks, without sacrificing accuracy. Neurons show evidence accumulation, ramping firing rates toward a threshold that triggers the decision. Even in trials with no directional sensory evidence, neural activity can predict the crow’s choice. Nieder discusses potential explanations for the speed, including a smaller brain with shorter neural wiring and possibly higher body temperatures in birds that could speed neural processes.

Poetry as Science Action

The episode moves to a discussion of Poetry and Science, with Phil Levin and David Hassler describing the idea that poetry does more than translate scientific facts; it can reveal aspects of human experience—attachment, grief, awe, memory—that standard scientific language cannot capture. The conversation situates poetry within environmental and conservation science and references the Poets for Science gathering. The segment also features Lara Volsky and a reading of a poem, Monarch Bear, to illustrate how poetry can cultivate care and motivate action without sacrificing scientific integrity. The broader message is that science communication benefits from the emotional and ethical resonance that poetry offers, potentially guiding public engagement and policy in more compassionate, effective ways.

Conclusion

Across these segments the podcast reinforces the value of interdisciplinary approaches in science, showing how archival scholarship, comparative neuroscience, and poetry can together broaden public understanding and inspire action around scientific knowledge.