Dark matter is thought to make up around a quarter of the universe, but so far it has eluded detection by all scientific instruments. Scientists know it must exist because of the ways galaxies move and it also explains the large-scale structure of the modern universe. But no-one knows what dark matter actually is. Scientists have been hunting for dark matter particles for decades, but have so far had no luck. At the annual meeting of the American Association for the Advancement of Science, held recently in Denver, a new generation of researchers presented their latest tools, techniques and ideas to step up the search for this mysterious substance. Will they finally detect the undetectable?&nbsp; Host: Alok Jha, The Economist’s science and technology editor. Contributors: Don Lincoln, senior scientist at Fermi National Accelerator Laboratory; Christopher Karwin, a fellow at NASA’s Goddard Space Flight Center; Josef Aschbacher, boss of the European Space Agency; Michael Murra of Columbia University; Jodi Cooley, executive director of SNOLAB; Deborah Pinna of University of Wisconsin and CERN. Get a world of insights for <a href="https://subscribenow.economist.com/podcasts-plus" rel="noopener noreferrer" target="_blank">50% off—subscribe to Economist Podcasts+</a> If you’re already a subscriber to The Economist, you’ll have full access to all our shows as part of your subscription. For more information about how to access Economist Podcasts+, please visit our <a href="https://myaccount.economist.com/s/article/What-is-Economist-Podcasts" rel="noopener noreferrer" target="_blank">FAQs page</a> or watch <a href="https://www.youtube.com/watch?v=48TlDbL-4vU" rel="noopener noreferrer" target="_blank">our video</a> explaining how to link your account. <hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

Babbage: The hunt for dark matter

Police clashes with <a href="https://www.economist.com/united-states/2024/04/23/efforts-to-tackle-student-protests-in-america-have-backfired-badly" rel="noopener noreferrer" target="_blank">protesters at Columbia University</a> have spilled over into other institutions, raising the question of how to protect free speech on campuses. Given America’s history with students’ anti-war protests going awry, should politicians be worried? Why most British voters now think <a href="https://www.economist.com/britain/2024/04/11/why-most-people-regret-brexit?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">Brexit</a> was a mistake (we did <a href="https://www.economist.com/leaders/2015/10/17/the-reluctant-european" rel="noopener noreferrer" target="_blank">warn</a> you!) (08:53) And, could <a href="https://www.economist.com/science-and-technology/2024/04/11/new-technology-can-keep-whales-safe-from-speeding-ships?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">new tech</a> protect whales from speeding ships (15:45)? Listen to what matters most, from global politics and business to science and technology—<a href="https://subscribenow.economist.com/podcasts-plus" rel="noopener noreferrer" target="_blank">Subscribe to Economist Podcasts+</a> For more information about how to access Economist Podcasts+, please visit our <a href="https://myaccount.economist.com/s/article/What-is-Economist-Podcasts" rel="noopener noreferrer" target="_blank">FAQs page</a> or watch <a href="https://www.youtube.com/watch?v=Gczo71bg1uY" rel="noopener noreferrer" target="_blank">our video</a> explaining how to link your account.&nbsp; <hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

The Intelligence: America’s college crackdowns

Ravaged by a civil war, Sudan could see a <a href="https://www.economist.com/middle-east-and-africa/2024/04/15/after-a-year-of-war-sudan-is-a-failing-state?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">nationwide famine</a> by August. With humanitarian aid being blocked on both sides, it is increasingly difficult to get supplies to those who need them the most. How to protect an <a href="https://www.economist.com/culture/2024/04/11/how-to-protect-an-endangered-language?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">endangered language</a> (09:01). And, why domestic cats have become an existential threat to <a href="https://www.economist.com/britain/2024/04/11/a-story-of-scottish-wildcats?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">Scottish wildcats</a> (14:43). Additional audio courtesy of the <a href="https://www.elalliance.org/" rel="noopener noreferrer" target="_blank">Endangered Language Alliance</a> Listen to what matters most, from global politics and business to science and technology—<a href="https://subscribenow.economist.com/podcasts-plus" rel="noopener noreferrer" target="_blank">Subscribe to Economist Podcasts+</a> For more information about how to access Economist Podcasts+, please visit our <a href="https://myaccount.economist.com/s/article/What-is-Economist-Podcasts" rel="noopener noreferrer" target="_blank">FAQs page</a> or watch <a href="https://www.youtube.com/watch?v=Gczo71bg1uY" rel="noopener noreferrer" target="_blank">our video</a> explaining how to link your account. <hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

The Intelligence: The world’s biggest humanitarian crisis

As Parliament has now agreed to send asylum seekers to Rwanda, many members of the ruling Conservative party want to <a href="https://www.economist.com/britain/2024/04/25/why-britains-membership-of-the-echr-has-become-a-political-issue" rel="noopener noreferrer" target="_blank">quit the court</a> that tried to block it. It would be yet another costly mistake. Earth’s largest refrigerator, <a href="https://www.economist.com/leaders/2024/03/27/antarctica-needs-a-lot-more-attention?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">Antarctica</a>, is defrosting. What does this mean for the rest of the world (09:24)? And a tribute to the <a href="https://www.economist.com/obituary/2024/04/25/terry-anderson-was-held-by-islamic-militants-for-2454-days?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">American journalist</a> held captive by Hizbullah for almost 7 years (17:50). Listen to what matters most, from global politics and business to science and technology—<a href="https://subscribenow.economist.com/podcasts-plus" rel="noopener noreferrer" target="_blank">Subscribe to Economist Podcasts+</a> <hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

The Intelligence: Britain’s latest bad idea

For months, a big foreign-aid deal looked like it was <a href="https://www.economist.com/united-states/2024/04/20/the-house-of-representatives-just-gave-ukraine-the-best-news-it-has-had-for-a-year?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=checksandbalance&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">going nowhere</a> in the House of Representatives. Now $95bn of support is heading out the door. How did the bill get through? What does it mean for Ukraine and for <a href="https://www.economist.com/leaders/2024/04/20/finally-americas-congress-does-right-by-ukraine?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=checksandbalance&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">American leadership in the world</a>? Charlotte Howard hosts with James Bennet and Idrees Kahloon. They’re joined by The Economist’s Adam O’Neal and Anton La Guardia. Listen to what matters most, from global politics and business to science and technology—<a href="https://subscribenow.economist.com/podcasts-plus" rel="noopener noreferrer" target="_blank">Subscribe to Economist Podcasts+</a>For more information about how to access Economist Podcasts+, please visit our <a href="https://myaccount.economist.com/s/article/What-is-Economist-Podcasts" rel="noopener noreferrer" target="_blank">FAQs page</a> or watch <a href="https://www.youtube.com/watch?v=Gczo71bg1uY" rel="noopener noreferrer" target="_blank">our video</a> explaining how to link your account. <hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

Checks and Balance: Aid, and a bet

The ruling military junta that seized power in a coup in 2021 is <a href="https://www.economist.com/asia/2024/04/11/myanmars-junta-is-losing-ever-more-ground?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">losing ground</a>, slowly—and the rebels are now thinking about what happens if they win. We examine the structural reasons behind Britain’s <a href="https://www.economist.com/britain/2024/04/16/where-are-all-the-british-robots?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">dearth of industrial robots</a> (10:22). And climate change boosts Canada’s yields of <a href="https://www.economist.com/the-americas/2024/04/18/the-worlds-insatiable-appetite-for-canadas-maple-syrup?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">maple syrup</a>, but also threatens to make them unpredictable (15:44). Listen to what matters most, from global politics and business to science and technology—<a href="https://subscribenow.economist.com/podcasts-plus" rel="noopener noreferrer" target="_blank">subscribe to Economist Podcasts+</a>. For more information about how to access Economist Podcasts+, please visit our <a href="https://myaccount.economist.com/s/article/What-is-Economist-Podcasts" rel="noopener noreferrer" target="_blank">FAQs page</a> or watch <a href="https://www.youtube.com/watch?v=Gczo71bg1uY" rel="noopener noreferrer" target="_blank">our video</a> explaining how to link your account. <hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

The Intelligence: A civil society in waiting

The dengue-fever case counts now break regional records every year—and the structural reasons behind <a href="https://www.economist.com/the-americas/2024/04/25/dengue-fever-is-surging-in-latin-america?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">the spike</a> suggest this sometimes-deadly virus will soon threaten more of the world. Breaches and security holes keep revealing how much of the internet’s innards are <a href="https://www.economist.com/the-economist-explains/2024/04/23/why-is-so-much-of-the-internets-infrastructure-run-by-volunteers?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">maintained by volunteers</a>; we ask why (09:45). And the case for <a href="https://www.economist.com/business/2024/03/21/the-secret-to-career-success-may-well-be-off-to-the-side?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">moving over</a>, not up, at work (17:10).&nbsp; Listen to what matters most, from global politics and business to science and technology—<a href="https://subscribenow.economist.com/podcasts-plus" rel="noopener noreferrer" target="_blank">subscribe to Economist Podcasts+</a>. For more information about how to access Economist Podcasts+, please visit our <a href="https://myaccount.economist.com/s/article/What-is-Economist-Podcasts" rel="noopener noreferrer" target="_blank">FAQs page</a> or watch <a href="https://www.youtube.com/watch?v=Gczo71bg1uY" rel="noopener noreferrer" target="_blank">our video</a> explaining how to link your account. <hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

The Intelligence: Dengue’s grip on Latin America

A dramatic overnight raid in New York City was just one sign that protests at American universities are set <a href="https://www.economist.com/united-states/2024/04/30/escalating-protests-expose-three-fault-lines-on-american-campuses?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">to continue</a>—a clear historical echo in an already-fraught election year. We ask why a niche newspaper run by Japan’s communist party has <a href="https://www.economist.com/asia/2024/04/18/an-obscure-communist-newspaper-is-shaping-japans-politics?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">so much influence</a> (13:05). And a study of <a href="https://www.economist.com/culture/2024/04/05/the-drawbacks-and-benefits-of-solitude?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">new books</a> on loneliness reveals both the benefits and drawbacks of solitude (20:39). Listen to what matters most, from global politics and business to science and technology—<a href="https://subscribenow.economist.com/podcasts-plus" rel="noopener noreferrer" target="_blank">subscribe to Economist Podcasts+</a>. For more information about how to access Economist Podcasts+, please visit our <a href="https://myaccount.economist.com/s/article/What-is-Economist-Podcasts" rel="noopener noreferrer" target="_blank">FAQs page</a> or watch <a href="https://www.youtube.com/watch?v=Gczo71bg1uY" rel="noopener noreferrer" target="_blank">our video</a> explaining how to link your account <hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

The Intelligence: Going back to raid school

Ever since there have been smartphones and social media, there have been concerns about how they might be affecting children. Over the past decade, doctors have seen a decline in mental health in the young in much of the rich world. But whether that rise can be attributed to technology is still a matter of fierce debate. Nevertheless, <a href="https://www.economist.com/science-and-technology/2024/04/17/what-is-screen-time-doing-to-children?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=babbage&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">demands are growing</a> to proactively restrict teenagers’ access to phones and social media, just in case. How concerned should parents and teachers be? Or is this just another moral panic?&nbsp; Host: Alok Jha, The Economist’s science and technology editor. Contributors: Tom Wainwright, The Economist's technology and media editor; Clare Fernyhough, co-founder of Smartphone Free Childhood; Carol Vidal of Johns Hopkins University; Pete Etchells, a psychologist at Bath Spa University and the author of “Unlocked: The Real Science of Screen Time”. Listen to what matters most, from global politics and business to science and technology—<a href="https://subscribenow.economist.com/podcasts-plus" rel="noopener noreferrer" target="_blank">subscribe to Economist Podcasts+</a> For more information about how to access Economist Podcasts+, please visit our <a href="https://myaccount.economist.com/s/article/What-is-Economist-Podcasts" rel="noopener noreferrer" target="_blank">FAQs page</a> or watch <a href="https://www.youtube.com/watch?v=Gczo71bg1uY" rel="noopener noreferrer" target="_blank">our video</a> explaining how to link your account. <hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

Babbage: Teens and their screens

When you look around the world, and at a wider set of measures, Generation Z are <a href="https://www.economist.com/leaders/2024/04/18/reasons-to-be-cheerful-about-generation-z?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">far better off</a> than the popular narrative would have you believe. We examine what India’s push to <a href="https://www.economist.com/asia/2024/03/14/india-is-souping-up-its-nuclear-missiles?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">soup up its nukes</a> means for the global arms race (09:30). And even as global fertility rates fall, sub-Saharan Africa is experiencing a <a href="https://www.economist.com/graphic-detail/2024/04/16/what-a-baby-boom-means-for-africa?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">relative baby boom</a> (17:11). Listen to what matters most, from global politics and business to science and technology—<a href="https://subscribenow.economist.com/podcasts-plus" rel="noopener noreferrer" target="_blank">subscribe to Economist Podcasts+</a>. For more information about how to access Economist Podcasts+, please visit our <a href="https://myaccount.economist.com/s/article/What-is-Economist-Podcasts" rel="noopener noreferrer" target="_blank">FAQs page</a> or watch <a href="https://www.youtube.com/watch?v=Gczo71bg1uY" rel="noopener noreferrer" target="_blank">our video</a> explaining how to link your account. <hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

The Intelligence: The kids are alright, turns out

France’s president is known for pronouncements of grand scope with one eye toward history. But when our journalists visited him at his residence his assessment of the state of the world was bleak—a dark, prophetic <a href="https://www.economist.com/leaders/2024/05/02/emmanuel-macrons-urgent-message-for-europe?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">call to arms</a>. In this special episode, we ask whether his view is accurate, whether his <a href="https://www.economist.com/europe/2024/05/02/how-to-rescue-europe" rel="noopener noreferrer" target="_blank">proposed solutions</a> would work and whether he is the person to enact them. Read the full transcript of our interview <a href="https://www.economist.com/europe/2024/05/02/emmanuel-macron-in-his-own-words-english?utm_campaign=a.io&utm_medium=audio.podcast.np&utm_source=theintelligence&utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">here</a>. Listen to what matters most, from global politics and business to science and technology—<a href="https://subscribenow.economist.com/podcasts-plus" rel="noopener noreferrer" target="_blank">subscribe to Economist Podcasts+</a>. For more information about how to access Economist Podcasts+, please visit our <a href="https://myaccount.economist.com/s/article/What-is-Economist-Podcasts" rel="noopener noreferrer" target="_blank">FAQs page</a> or watch <a href="https://www.youtube.com/watch?v=Gczo71bg1uY" rel="noopener noreferrer" target="_blank">our video</a> explaining how to link your account. <hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

The Intelligence: Our meeting with Macron

The Economist was founded in 1843 "to throw white light on the subjects within its range".

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Babbage: The hunt for dark matter

The Economist

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