Turtle Scales May Hold the Secret to How Dinosaurs Formed Their Skin
Turtles have roamed the Earth since the Triassic Period over 200 million years ago. A new study about their evolution, published in iScience, shows how the scales on turtles’ heads
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What Happens in Our Brain When We’re Given Questionable Orders?
Does following orders justify morally questionable actions? This question often arises in military and other strict hierarchical settings, where obedience can clash with personal values. Historically, this tension has been
Programmable seconds-to-days-long delayed snapping in jumping metashells
Proceedings of the National Academy of Sciences, Volume 122, Issue 23, June 2025. SignificanceTimekeeping is fundamental to both nature and society, spanning from biological rhythms to mechanical clocks. However, integrating
Controlling DNA–RNA strand displacement kinetics with base distribution
Proceedings of the National Academy of Sciences, Volume 122, Issue 23, June 2025. SignificanceImportant biological processes, including DNA replication, transcriptional initiation and CRISPR-Cas9 gene editing, rely on reactions in which
Light at night negatively affects mood in diurnal primate-like tree shrews via a visual pathway related to the perihabenular nucleus
Proceedings of the National Academy of Sciences, Volume 122, Issue 23, June 2025. SignificanceLong-term light at night (LAN) exposure poses a health threat to nocturnal lab animals. Whether diurnal animals
High-frequency monitoring enables machine learning–based forecasting of acute child malnutrition for early warning
Proceedings of the National Academy of Sciences, Volume 122, Issue 23, June 2025. SignificanceAs the number and share of people suffering from food insecurity worldwide has risen over the past
Endogenous competition and the underrealized reproduction of infectious diseases
Proceedings of the National Academy of Sciences, Volume 122, Issue 23, June 2025. SignificanceOur understanding and policy decisions regarding evolving epidemics are often driven by measures of transmissibility, particularly reproduction
Dozens of active and planned NASA spacecraft killed in Trump budget request
Proposal would end nearly all new major science missions…Read More
NIH funding policy deals new blow to HIV-related trial networks
Halt to foreign “subawards” disrupts ongoing global studies and has researchers scrambling to fulfill ethical obligations to trial volunteers…Read More
Structural insights into chromatin remodeling by ISWI during active ATP hydrolysis | Science
Chromatin remodelers utilize the energy of adenosine triphosphate (ATP) hydrolysis to slide nucleosomes, regulating chromatin structure and gene activity in cells. In this work, we report structures of imitation switch
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