Cover Story

The cover features the Yukon River delta in western Alaska, where sediment-laden water flows through branching channel networks and spreads into Norton Sound, exhibiting scaling relations between length and area that suggest universal rules for delta growth (page 493). Note: This is geophysics-focused rather than AI/life sciences. Science

AI and Life Sciences Articles

1. Clinical AI Reasoning (Primary AI-Life Sciences Focus)

"Performance of a large language model on the reasoning tasks of a physician"

• Authors: Brodeur et al. PubMed
• Pages: 524–527
• DOI: 10.1126/science.adz4433
• Link: https://www.science.org/doi/10.1126/science.adz4433

The study demonstrates that AI can match or exceed physician-level clinical diagnostic reasoning on text-based scenarios when measured against human physician performances on clinical vignettes and real-world emergency cases. The LLM consistently matched or exceeded physician performance across five experiments with clinical case vignettes and a sixth experiment comparing it with prior models and physicians across three diagnostic touchpoints on 76 actual emergency department cases. ScienceInside Precision Medicine

"AI can reason like a physician—what comes next?" (Editorial perspective)

• Authors: Ashley M. Hopkins and Erik Cornelisse Science
• Pages: 466-467
• DOI: 10.1126/science.aeg8766
• Link: https://www.science.org/doi/10.1126/science.aeg8766

2. Synthetic Biology - Reduced Amino Acid Alphabet

Research on building cells with fewer than the canonical 20 amino acids. Scientists from Columbia University stripped isoleucine from ribosomes in Escherichia coli, creating bacteria that function with 19 amino acids, challenging fundamental assumptions about life's molecular language. SingularityHub

3. Additional Life Sciences Content

• T Cell Biology: Research on CD8+ T cell activation and dendritic cell interactions
• Aging & ER Remodeling: Studies on endoplasmic reticulum remodeling during aging that may contribute to stress resistance and promote longevity in organisms like Caenorhabditis elegans Science

Key Publications & Links

The primary AI-life sciences focus of this issue centers on the landmark finding that reasoning-capable language models now match or exceed physician performance on clinical diagnostic tasks, with implications for AI integration into healthcare workflows.