David Morton Rintoul
Dare to Know
Dare to Know is a podcast published by David Morton Rintoul offering feature stories aimed at those who find meaning in understanding our universe, our place in nature and our humanity.
Author
David Morton Rintoul
Category
Podcast website
Latest episode
Apr 6, 2024
Where to listen?
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Episodes
WISHFUL THINKING LEADS TO POOR DECISION MAKING 06.04.2024 6:22
Wishful thinking, or dismissing beliefs that make us uncomfortable, even if they’re true, is a common human weakness. Find out how a new study examined how we tend to avoid thinking about negative consequences and how we can learn to manage this familiar tendency.
Ice Cap Melting Affects Global Timekeeping Systems 30.03.2024 7:23
Ice cap melting is one of many adverse results of global warming and climate change. Find out how the flow of meltwater from Earth’s poles to its equator is affecting our planet’s rotation rate and how our atomic clocks measure time.
Milky Way’s Origins Revealed Using Gaia Observatory 23.03.2024 6:14
The Milky Way’s origins have puzzled scientists since we first realized its one of countless galaxies in our universe. Find out how scientists have applied information from the Gaia Space Observatory and the Sloan Digital Sky Survey to uncover two of our galaxy’s earliest star streams.
Memory Depends on ‘Spacing Effect’ and Variation 15.03.2024 6:47
Memory has puzzled scholars since the dawn of civilization. Find out how new research shows that spacing out study periods, along with varying the context of the item we’re trying to remember, improves our memories.
Bumblebee Hives Can Progress Through Shared Learning 08.03.2024 6:28
Bumblebee hives can provide fascinating insights into animal behaviour in groups. Find out how a new study suggests that bees can learn complex, multi-step tasks through social interaction.
Odysseus Lunar Lander Completes Mission Despite Setbacks 06.03.2024 6:20
Odysseus is the name of the first American spacecraft to land on the moon in 52 years. Find out how its missions succeeded despite enduring and overcoming some demanding challenges and setbacks.
Robots With AI Also Need Physical Intelligence 24.02.2024 7:18
Robots with AI (artificial intelligence) are emerging as developers combine large language models (LLMS) with autonomous devices. Find out why they’re discovering that it takes far more than linguistic skills to replicate basic human abilities.
Migratory Species Face Risk of Extinction 17.02.2024 7:55
Migratory species are the subject of a new report presented at the United Nations this week. Find out why populations of migratory animals are declining, and what scientists recommend to conserve and sustain these threatened species and their habitats.
Black Holes and Galaxies Coexisted in the Early Universe 10.02.2024 6:22
Black holes and galaxies existed together during the first one percent of our universe’s existence. Find out why this upends conventional thinking on how stars, galaxies and black holes formed after the Big Bang.
Brain Cells Organize Using Unexpectedly Simple Principles 03.02.2024 7:20
Brain cells have a remarkable capacity to organize themselves. Find out how a new study explains the strikingly simple networking processes behind these vital connections.
WHITE RHINO EXTINCTION AVOIDABLE THROUGH EMBRYO TRANSFER 28.01.2024 7:03
White rhino extinction has reached the point where there are only two of the animals left on Earth. Find out how a team of veterinarians and conservationists has found a way to rescue this species using in vitro fertilization and embryo transfer.
Artemis II Lunar Mission Postponed by NASA 22.01.2024 7:48
Artemis II is NASA's planned, crewed mission to return to the moon. Find out why NASA has rescheduled the space flight and the delay’s implications for an eventual crewed lunar landing.
Cultural Evolution May Be Blocking Ecological Solutions 19.01.2024 7:40
Cultural evolution refers to the way humans create tools and social systems to adapt to and shape their environments. Find out how the tension between our cooperative and competitive natures may be preventing us from solving the ecological crisis humanity faces.
Photosynthesis Evolution Clarified by Studying Bacteria Fossils 18.01.2024 6:02
Photosynthesis evolution remains a mystery to biologists. Find out how a new study sheds light on our understanding of this critical organic process by pushing the timeline of its origins back by over a billion years.
Military Space Plane Launch Risks International Conflict 30.12.2023 8:27
A military space plane called the Boeing X-37B blasted off from the Kennedy Space Center this week. Find out more about its secretive mission, and why it creates unnecessary tension between the United States and China.
Prehistoric Herders More Sophisticated Than Scientists Realized 24.12.2023 7:14
Prehistoric herders in the high mountains kept small, diverse animal herds. Find how a new study reveals that their animal husbandry practices were far more sophisticated than previously thought.
COP 28 Results: Accomplishments, Failures and Controversy 17.12.2023 6:24
COP 28 was a UN conference on climate change that wrapped up this week. Find out why many observers believe the results don’t go far enough and that the parties’ commitments are too vague to seriously address the climate crisis.
Heaviest Chemical Elements Created by Ancient Stars 09.12.2023 7:08
The heaviest chemical elements in the universe come from neutron stars. Find out how a new study shows that this process creates heavier atoms than anything we experience on Earth.
Sense of Smell Predicted by Artificial Intelligence 02.12.2023 6:17
Our sense of smell is often overlooked when we consider the tidal wave of artificial intelligence applications. Find out how a new machine-learning model can predict how a new chemical compound will smell without involving humans.
COP 28: Frustration, Scepticism, Faint Trace of Hope 25.11.2023 7:33
COP 28 is the upcoming UN conference on climate change. Find out why the mood leading into this global gathering is a blend of frustration, scepticism and just a faint trace of wary hope.
Blobs in Earth's Interior From Ancient Planet 18.11.2023 6:45
Blobs in the Earth’s interior mantle have been puzzling geologists for decades. Find out how a new study solves the mystery by linking them to an ancient planet that collided with Earth to form the Moon.
REMEMBRANCE DAY REFLECTIONS ON PAST AND FUTURE 12.11.2023 6:10
Remembrance Day in Canada commemorates the veterans who gave their lives in the First and Second World Wars, Korea and Afghanistan. Find out the topics on which I found myself reflecting during this annual moment of silence.
Carbon Budget Dwindling – Climate Goals at Risk 05.11.2023 7:22
The carbon budget estimates how much more C02 we can emit into the atmosphere and still keep global warming below 1.5˚ C. Find out why a new study found that we only have a 50% change of meeting our climate targets.
Space Junk Particles Detected in Earth's Atmosphere 29.10.2023 7:12
Space junk is the debris left behind from spent rocket stages and defunct satellites. Find out why the discovery of space junk particles in the stratosphere has implications for our environment and climate.
Gaza Crisis, Human Rights and International Law 21.10.2023 9:13
The Gaza crisis has captured everyone’s attention over the past couple of weeks. Find out why the roots of the conflict, and its solutions, lie in all parties understanding and respecting universal human rights.
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