How hula hoops stay aloft
PNAS Science Sessions
How hula hoops stay aloft Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us. In this episode, Olivia Pomerenk reveals the physics of hula hooping. In this episode, we cover: •[00:00] Introduction •[00:49] Applied mathematician Olivia Pomerenk talks about the...
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Climate effects and shifting Arctic coastlines
PNAS Science Sessions
Erosion, subsidence, and sea level rise on Arctic coastlines Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us. In this episode, Roger Creel describes how compounding forces could reshape a thawing Arctic coastline. In this episode, we cover: •[00:00] Introduction...
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Movies, neurons, and AI
PNAS Science Sessions
How brains and AI systems process moving images Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us. In this episode, Hollis Cline describes how neuroscience informed development of an artificial intelligence movie recognition system. In this episode, we cover:...
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Sustainability of plant-based meat alternatives
PNAS Science Sessions
Sustainability of plant-based meat alternatives Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us. In this episode, researchers discuss the environmental, health, and economic tradeoffs that limit the potential benefits of plant-based meat alternatives. In this...
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Plumeworld ocean and snowball Earth
PNAS Science Sessions
How Snowball Earth melted Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us. In this episode, Shuhai Xiao explores how the Earth emerged from a planetwide glaciation called Snowball Earth. In this episode, we cover: •[00:00] Introduction •[00:48] Geobiologist...
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The curious case of the comb jelly
PNAS Science Sessions
Reverse development in a comb jelly Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us. In this episode, Joan Soto and Patel Burkhardt introduce us to a comb jelly with the ability to reverse its development to an earlier stage of life. In this episode, we cover:...
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Air pollution and economic mobility
PNAS Science Sessions
Air pollution and upward mobility Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us. In this episode, Luca Merlo and Francesca Dominici explore whether childhood exposure to air pollution can impact economic upward mobility as an adult. In this episode, we cover:...
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Long-term impact of wildfire smoke pollution
PNAS Science Sessions
Nationwide effects of smoke-related air pollution Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us. In this episode, Kai Chen explains the nationwide health effects of smoke-related fine particulate matter air pollution. In this episode, we cover: •[00:00]...
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Indigenous communities and subsistence whale hunting
PNAS Science Sessions
Indigenous hunting and beluga populations Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us. In this episode, Max Friesen, Eline Lorenzen, and Mikkel Skovrind explore beluga population dynamics in relation to subsistence hunting by Indigenous communities in northern...
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Perceiving musical boundaries
PNAS Science Sessions
The neuroscience of music perception Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us. In this episode, Petri Toiviainen, Ibi Burunat, and Daniel Levitin describe the neuroscience of how musicians and non-musicians perceive boundaries within pieces of music. In this...
info_outlineHow python hearts grow and shrink
Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us.
In this episode, Leslie Leinwand, of the University of Colorado in Boulder, and Claudia Crocini, of Charité – Berlin University of Medicine in Germany, describe how the hearts of constricting pythons change size after meals.
In this episode, we cover:
•[00:00] Introduction
•[01:19] What is the natural context for cardiac hypertrophy in constricting pythons?
•[02:48] What were the mechanisms involved in this process that you identified?
•[05:27] What did you discover about the mechanisms of heart size regression in these snakes?
•[07:24] What are the next steps in this line of research?
•[08:21] Conclusion.
About Our Guest:
Leslie Leinwand
Professor
University of Colorado
Claudia Crocini
Junior Research Group Leader
Charité – Berlin University Medicine
View related content here: https://www.pnas.org/doi/full/10.1073/pnas.2322726121
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