Dare to Know
167 episodes - English - Latest episode: 22 days ago -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.
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Episodes
‘Black Widow’ Binary Star Found – Shortest Orbit Ever
May 08, 2022 23:22 - 5 minutes - 1.9 MBBlack widow binary stars consist of a neutron star consuming a nearby companion star. Find out how scientists used a new technique to find one of these rare systems, and why their discovery has two other unique characteristics. This episode is also available as a blog post: http://daretoknow.ca/2022/05/05/black-widow-binary-star-found-shortest-orbit-ever/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Diet-Size Relationship in Animals Disturbed by Humans
April 27, 2022 19:11 - 7 minutes - 2.62 MBThe diet-size relationship is a universal principle in the animal kingdom that dates back millions of years. Find out how human activity is disturbing that principle's balance and the implications for species extinction. This episode is also available as a blog post: http://daretoknow.ca/2022/04/25/diet-size-relationship-in-animals-disturbed-by-humans/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
UN Human Rights Council Condemns Fake News and Hate Speech
April 27, 2022 19:08 - 5 minutes - 1.85 MBThe UN Human Rights Council adopted a plan of action to combat disinformation last week. Find out why disinformation is more than just a nuisance, it's a threat to human rights and fundamental freedoms. This episode is also available as a blog post: http://daretoknow.ca/2022/04/03/un-human-rights-council-condemns-fake-news-and-hate-speech/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Hubble Telescope Finds Most Distant Star Ever Seen
April 27, 2022 19:05 - 4 minutes - 1.51 MBThe Hubble Telescope has just located a star that's 12.9 billion light-years away. Find out why this discovery offers new insights into how our Universe began. This episode is also available as a blog post: http://daretoknow.ca/2022/04/10/hubble-telescope-finds-most-distant-star-ever-seen/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Belief in Evolution Promotes Tolerance
April 27, 2022 19:01 - 4 minutes - 1.65 MBBelief in evolution makes us more tolerant of those who seem different from ourselves. Find out how a new study confirms this and encourages teaching evolution in the classroom. This episode is also available as a blog post: http://daretoknow.ca/2022/04/18/belief-in-evolution-promotes-tolerance/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Male Dolphins Use Wingmen to Find Mates
April 27, 2022 18:58 - 4 minutes - 1.47 MBMale dolphins are healthier and live longer when they have a network of male friends. Find out how a new study revealed that this popularity also makes them more likely to find mates. This episode is also available as a blog post: http://daretoknow.ca/2022/03/27/male-dolphins-find-mates-using-wingmen/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Webb Telescope Optics Meet Expectations
April 27, 2022 18:50 - 5 minutes - 1.81 MBThe James Webb Space Telescope team has announced that they've completed a key stage in deploying its primary mirror. Find out why NASA now confirms that the telescope's audacious design will deliver on its demanding science goals. This episode is also available as a blog post: http://daretoknow.ca/2022/03/20/webb-telescope-optics-meet-expectations/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Planet with Two Suns Detected by Ground-Based Telescope
April 27, 2022 17:14 - 5 minutes - 1.75 MBThis episode is also available as a blog post: http://daretoknow.ca/2022/02/27/planet-with-two-suns-detected-by-ground-based-telescope/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Co-Worker Support Drives Employee Creativity
April 27, 2022 17:13 - 5 minutes - 1.85 MBThis episode is also available as a blog post: http://daretoknow.ca/2022/02/20/co-worker-support-drives-employee-creativity/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Invasive Plants Cause More Problems with Climate Change
April 27, 2022 17:11 - 4 minutes - 1.46 MBThis episode is also available as a blog post: http://daretoknow.ca/2022/02/13/invasive-plants-cause-more-problems-with-climate-change/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Moons May Guide Us to Life on Other Planets
April 27, 2022 17:10 - 5 minutes - 1.83 MBThis episode is also available as a blog post: http://daretoknow.ca/2022/02/04/moons-may-guide-us-to-life-on-other-planets/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Sleep Problems Threaten Nurses’ Mental Health
April 27, 2022 17:09 - 6 minutes - 2.13 MBThis episode is also available as a blog post: http://daretoknow.ca/2022/01/31/sleep-problems-threaten-nurses-mental-health/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Truth and Reconciliation Day – “There Is No Try”
April 27, 2022 17:07 - 7 minutes - 2.47 MBThis episode is also available as a blog post: http://daretoknow.ca/2021/09/30/truth-and-reconciliation-day-there-is-no-try/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Warmest Eight Years on Record
April 27, 2022 17:06 - 6 minutes - 2.37 MBThis episode is also available as a blog post: http://daretoknow.ca/2022/01/22/warmest-eight-years-ever/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
James Webb Space Telescope Unfolds Its Mirror
April 27, 2022 17:04 - 6 minutes - 2.13 MBThis episode is also available as a blog post: http://daretoknow.ca/2022/01/09/james-webb-space-telescope-unfolds-its-mirror/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Language Skills: How Do We Get Them?
April 27, 2022 17:02 - 6 minutes - 2.23 MBThis episode is also available as a blog post: http://daretoknow.ca/2021/09/26/language-skills-how-do-we-get-them/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Coral Reefs Need Reforestation to Stop Sediment Run-Off
April 27, 2022 17:01 - 5 minutes - 1.81 MBThis episode is also available as a blog post: http://daretoknow.ca/2021/09/18/coral-reefs-need-reforestation-to-stop-sediment-run-off/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Exotic Fourth State of Matter on the Sun
April 27, 2022 16:57 - 4 minutes - 1.6 MBThis episode is also available as a blog post: http://daretoknow.ca/2019/05/27/exotic-fourth-state-of-matter-on-the-sun/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
IPCC Climate Change Report Upstaged by Ukraine
April 27, 2022 16:54 - 7 minutes - 2.52 MBThis episode is also available as a blog post: http://daretoknow.ca/2022/03/06/ipcc-climate-change-report-upstaged-by-ukraine/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Langmansoren Woman Brought to Life After 4,000 Years
March 13, 2022 19:21 - 4 minutes - 1.52 MBThe Langmansoren Woman lived 4,000 years ago in Northeastern Sweden. Find out how an archeological artist has reconstructed her face and forged a human connection with her remains. This episode is also available as a blog post: http://daretoknow.ca/2022/03/13/langmansoren-woman-broght-to-life-after-4000-years/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Planet Formation Clarified by Young Star System
August 22, 2021 02:42 - 6 minutes - 2.31 MBPLANET FORMATION CLARIFIED BY YOUNG STAR SYSTEM Planet formation remains one of the mysteries of astrophysics. Find out how a new study sheds light on the process and offers a new method for future research in the field. This episode is also available as a blog post: http://daretoknow.ca/2021/08/21/planet-formation-clarified-by-young-star-system/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Cosmic Queries – A Review
August 22, 2021 02:40 - 5 minutes - 1.99 MBCOSMIC QUERIES – A REVIEW Cosmic Queries is a new book written by Neil DeGrasse Tyson and James Trefil and published by National Geographic. Find out how this book balances education and entertainment in a highly readable volume. This episode is also available as a blog post: http://daretoknow.ca/2021/08/18/cosmic-queries-a-review/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Grizzly Bear DNA Matches Indigenous Human Languages
August 22, 2021 02:37 - 12 minutes - 11.4 MBGRIZZLY BEAR DNA MATCHES INDIGENOUS HUMAN LANGUAGES Grizzly bears and humans have very similar needs in terms of diet and habitat. Find out about a fascinating study’s connection between bear DNA and human language groups in British Columbia. This episode is also available as a blog post: http://daretoknow.ca/2021/08/17/grizzly-bear-dna-matches-indigenous-human-languages/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Hubble Tension May Be Loosening
July 22, 2021 21:43 - 5 minutes - 2.05 MBHubble tension is the difference in results that scientists get when they try to measure the rate at which our Universe expands. Find out how a new study may have split the difference and loosened the tension between two camps of researchers. This episode is also available as a blog post: http://daretoknow.ca/2021/07/19/hubble-tension-may-be-loosening/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
The Sixth Extinction: An Unnatural History – A Review
July 22, 2021 21:31 - 7 minutes - 2.61 MBThe Sixth Extinction’ by Elizabeth Kolbert is a Pulitzer Prize winning overview of past and present mass extinctions. Discover why many scientists believe that humans are causing a new era of mass extinction today. This episode is also available as a blog post: http://daretoknow.ca/2021/04/21/the-sixth-extinction-an-unnatural-history-a-review/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Bird Evolution Can Be Surprisingly Fast
July 22, 2021 21:25 - 6 minutes - 2.3 MBBird evolution has helped scientists understand how natural selection works since the time of Darwin. Find out how a species of birds in Indonesia demonstrated how rapidly evolution can take place. This episode is also available as a blog post: http://daretoknow.ca/2021/07/22/bird-evolution-can-be-surprisingly-fast/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Mars Helicopter ‘Ingenuity’ Takes Flight
April 20, 2021 00:54 - 6 minutes - 2.06 MBThe Mars Helicopter Ingenuity made the first powered, controlled flight on another planet today. Discover the challenges the flight overcame and the next steps for the mission. This episode is also available as a blog post: http://daretoknow.ca/2021/04/19/mars-helicopter-ingenuity-takes-flight/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Brain Cells Have Mysterious Self-Organizing Ability
April 06, 2021 21:03 - 4 minutes - 1.52 MBBrain cells have both excitatory and inhibitory roles in transmitting neural signals. Discover how they can adapt within those roles and what that could mean for treating brain disorders. This episode is also available as a blog post: http://daretoknow.ca/2021/04/06/brain-cells-have-mysterious-self-organizing-ability/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Lightning Strikes Vital to Origin of Life
April 04, 2021 01:00 - 5 minutes - 1.98 MBLightning strikes have played a part in theories on the origin of life since Darwin. Discover how a new study sheds more light on the role of lightning in bringing life to our planet. This episode is also available as a blog post: http://daretoknow.ca/2021/04/03/lightning-strikes-vital-to-origin-of-life/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Dark Energy: Dark Matter Magnetism?
April 02, 2021 02:56 - 6 minutes - 2.15 MBDark energy is a hypothetical force that scientists rely on to explain why the Universe expands at an accelerating rate. Discover how a new theory challenges dark matter’s existence based on magnetism. This episode is also available as a blog post: http://daretoknow.ca/2021/04/01/dark-energy-dark-matter-magnetism/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Origins: Cosmos, Earth and Mankind – A Review
March 28, 2021 02:24 - 7 minutes - 2.6 MB'Origins: Cosmos, Earth and Mankind’ is a classic work in the Big History movement. Discover how it outlines the evolution of the Universe and its meaning for our lives together. This episode is also available as a blog post: http://daretoknow.ca/2021/03/27/origins-cosmos-earth-and-mankind-a-review/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Copper Culture in North America is Older than We Thought
March 26, 2021 01:58 - 7 minutes - 2.53 MBThe “copper culture” lived near the Great Lakes and was among the world’s first peoples to forge metals. Discover why their culture moved on and how its discovery debunks racial stereotypes. This episode is also available as a blog post: http://daretoknow.ca/2021/03/25/copper-culture-in-north-america-is-older-than-we-thought/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Lifeless Matter Needs Destruction to Evolve
March 22, 2021 18:46 - 6 minutes - 2.19 MBLifeless matter could only have evolved into self-replicating molecules by growing more complex. Discover how destruction might make this counterintuitive process conceivable. This episode is also available as a blog post: http://daretoknow.ca/2021/03/22/lifeless-matter-needs-destruction-to-evolve/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Big Bang Afterglow Showing How Galaxies Form
March 20, 2021 03:13 - 6 minutes - 2.25 MBThe Big Bang Afterglow is known as the Cosmic Microwave Background (CMB). Discover how combining CMB data with galactic observations is unlocking the secret of galaxy formation. This episode is also available as a blog post: http://daretoknow.ca/2021/03/19/big-bang-afterglow-showing-how-galaxies-form/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Subjective Memories Drive Our Decision-Making
March 16, 2021 02:49 - 5 minutes - 1.99 MBSubjective memories are those vivid, emotional impressions we relive when recalling a past experience. Find out how they affect our decision-making and why they may not be in our best interest. This episode is also available as a blog post: http://daretoknow.ca/2021/03/15/subjective-memories-drive-our-decision-making/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Air Pollution and Greenhouse Gas Reductions Go Together
March 13, 2021 19:20 - 6 minutes - 2.1 MBAir pollution has a cooling effect on the atmosphere, while greenhouse gases cause global warming. Find out why both emission types must be cut in combination to preserve our environment. This episode is also available as a blog post: http://daretoknow.ca/2021/03/13/air-pollution-and-greenhouse-gas-reductions-go-together/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Universe’s Expansion Rate Still Hard to Pin Down
March 11, 2021 04:00 - 7 minutes - 2.64 MBThe Universe’s expansion rate, the Hubble constant, is vital to understanding the Cosmos’ origin and fate. Find out how the latest technique for measuring the Hubble constant sheds new light on the past and future. This episode is also available as a blog post: http://daretoknow.ca/2021/03/10/universes-expansion-rate-still-hard-to-pin-down/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
The Canon: A Whirligig Tour of the Beautiful Basics of Science – A Review
March 09, 2021 18:00 - 6 minutes - 2.23 MBThe Canon is a playful book aimed at teaching adults basic science. Find out why the author felt readers needed this book and how it makes science fun again. This episode is also available as a blog post: http://daretoknow.ca/2021/03/09/the-canon-a-whirligig-tour-of-the-beautiful-basics-of-science-a-review/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Carbon Taxes Are the Best Way to Fight Climate Change
March 06, 2021 18:00 - 5 minutes - 2.03 MBCarbon taxes aren’t terribly popular in some circles, but they work. Find out what a new study found about the results of putting a price on carbon compared to other measures to combat the climate crisis. This episode is also available as a blog post: http://daretoknow.ca/2021/03/06/carbon-taxes-are-the-best-way-to-fight-climate-change/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Bow and Arrow Technology and Culture
March 05, 2021 18:00 - 8 minutes - 2.83 MBThe bow and arrow is an ancient technology, and it takes great skill to make a bow. Find out what researchers discovered from interviews with expert bow makers from the hunter-gatherer Hadza people. This episode is also available as a blog post: http://daretoknow.ca/2021/03/06/bow-and-arrow-technology-and-culture/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Gravitomagnetism: Does It Explain Away Dark Matter?
March 04, 2021 18:00 - 6 minutes - 2.37 MBGravitomagnetism is the energy created by spinning objects in the fabric of spacetime. Find out why it may explain away the mysterious Dark Matter for which scientists have been searching unsuccessfully. This episode is also available as a blog post: http://daretoknow.ca/2021/03/05/gravitomagnetism-does-it-explain-away-dark-matter/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
‘The Sacred and the Profane’ – A Review
February 28, 2021 18:00 - 7 minutes - 2.47 MB'The Sacred and the Profane' is a classic book on the history of religion. Find out how it reveals the Universe, Nature and Humanity as our connections to the sacred. This episode is also available as a blog post: http://daretoknow.ca/2021/02/28/the-sacred-and-the-profane-a-review/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Indigenous Rights Debated While First Nations Lack Safe Water
February 25, 2021 23:00 - 6 minutes - 2.26 MBIndigenous rights were the subject of new legislation in Canada’s parliament. Find out why practical steps to provide safe drinking water mean more to Canada’s First Nations communities. This episode is also available as a blog post: http://daretoknow.ca/2021/02/25/indigenous-rights-debated-while-first-nations-lack-safe-water/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
‘Making Peace with Nature’ Report Offers Sustainable Blueprint
February 24, 2021 23:00 - 6 minutes - 2.17 MB‘Making Peace with Nature’ is the title of a new report from the United Nations Environment Program (UNEP). Find out how it lays out a blueprint for solving our climate, biodiversity and pollution challenges. This episode is also available as a blog post: http://daretoknow.ca/2021/02/24/making-peace-with-nature-report-offers-sustainable-blueprint/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Mars Makes News Three Times This Week
February 20, 2021 23:00 - 7 minutes - 2.71 MBMars was made the news three times this week as three countries arrived there within days of each other. Find out the objectives of each mission and their plans to learn about the Red Planet. This episode is also available as a blog post: http://daretoknow.ca/2021/02/20/mars-makes-news-three-times-this-week/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
The View from the Centre of the Universe – The New Story Retold
February 20, 2021 23:00 - 7 minutes - 2.56 MBThe View From the Centre of the Universe is part of a sub-genre of interpretations of Thomas Berry’s essay, The New Story. Find out why the authors believe our current thinking needs a drastic change. This episode is also available as a blog post: http://daretoknow.ca/2021/02/20/the-view-from-the-centre-of-the-universe-the-new-story-retold/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Alcoholism’s Brain Pathway Located By MRI Scans
February 16, 2021 23:00 - 6 minutes - 2.26 MBAlcoholism is a widespread yet poorly understood disease. Find out how a new study locates its roots in the brain and may lead to better treatment. This episode is also available as a blog post: http://daretoknow.ca/2021/02/16/alcoholisms-brain-pathway-located-by-mri-scans/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Food Waste Caused By Picky Consumers
February 15, 2021 23:00 - 5 minutes - 1.88 MBFood waste is getting out of hand as consumers reject items with minor imperfections. Find out what’s behind our food choices and how we can improve our decision making. This episode is also available as a blog post: http://daretoknow.ca/2021/02/15/food-waste-results-from-picky-consumers/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Square Kilometre Array Will Be World’s Largest Radio Telescope
February 08, 2021 23:00 - 6 minutes - 2.34 MBThe Square Kilometre Array Observatory has received international approval. Find out why this megaproject signals an inspiring new era in global astronomy. This episode is also available as a blog post: http://daretoknow.ca/2021/02/08/square-kilometre-array-will-be-worlds-largest-radio-telescope/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message
Human Tolerance Evolved from Living in Harsh Conditions
February 06, 2021 23:00 - 6 minutes - 2.2 MBHuman tolerance sets us apart from other animals. Find out how a computer simulation shows that harsh conditions drove our ancestors’ self-domestication process. This episode is also available as a blog post: http://daretoknow.ca/2021/02/06/human-tolerance-evolved-from-living-in-harsh-conditions/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message