In the 1990s, researchers in western Canada identified a new two-note song variant in white-throated sparrows, differing from the traditional three-note ending. While bird songs evolve, new

In the 1990s, researchers in western Canada identified a new two-note song variant in white-throated sparrows, differing from the traditional three-note ending. While bird songs evolve, new dialects typically remain localized rather than replacing established ones.

However, a study found this once-rare two-note song spread "virally" across over 1,800 miles of Canada between 2000 and 2019, completely replacing the historic song. The reason for its widespread adoption is unknown. Senior author Ken Otter called this rapid, extensive cultural evolution of a song type "unprecedented." Learn more here.

Arnis Sauka, a professor and director at the Stockholm School of Economics in Riga, is a leading expert on the shadow economy. His extensive research, involving methodology development and impact

Arnis Sauka, a professor and director at the Stockholm School of Economics in Riga, is a leading expert on the shadow economy. His extensive research, involving methodology development and impact measurement, reveals its profound complexity. Sauka's work highlights the nuanced nature of the shadow economy, challenging negative perceptions by showing it can even have beneficial aspects.

Sauka's applied research includes collaborations with organizations like the OECD and European Commission, with findings published in leading journals and books. He co-authors the annual Shadow Economy Index for the Baltic Countries and authors the FICIL Sentiment Index. He has also held management and consultancy roles and is a frequent media commentator.

This talk was delivered at a TEDx event. Learn more at ted.com/tedx.

Elder Chief Dr. Harry Bone, co-author of "Wahbanung - The Resurgence of a People," spoke on March 19, 2020. He discussed the Pipe ceremony's significance in defining the path to sovereignty,

Elder Chief Dr. Harry Bone, co-author of "Wahbanung - The Resurgence of a People," spoke on March 19, 2020. He discussed the Pipe ceremony's significance in defining the path to sovereignty, connecting it to a ceremony 50 years prior. This earlier event inspired "Wahbung: Our Tomorrows" by the Manitoba Chiefs, written in response to the Canadian government's White Paper, which aimed to eliminate Indigenous rights.

Access the presentation transcript [here](http://www.turtlelodge.org/2020/05/elder-chief-dr-harry-bone-speaks-about-wahbanung/) or purchase a copy of the "Summary of Wahbanung - The Resurgence of a People: Clearing the Path for Our Survival" [here](http://www.turtlelodge.org/wahbanung/).

Takeaway paper coffee cup waste and recyclability, especially concerning ocean plastics, are prominent issues. Demand for better design, reuse, and recycling is high. This video features DS

Takeaway paper coffee cup waste and recyclability, especially concerning ocean plastics, are prominent issues. Demand for better design, reuse, and recycling is high. This video features DS Smith's European Strategic Development Director Tom Campbell-White and Costa's Head of Environment Oliver Rosevear, offering industry perspectives on these topics.

Founded in 2010 by Ellen MacArthur, the UK-based Ellen MacArthur Foundation is a global thought leader accelerating the transition to a circular economy. It works across business, government, and academia to establish the circular economy on decision-makers' agendas. Learn more at ellenmacarthurfoundation.org and subscribe to their YouTube channel: youtube.com/user/made2bemedia.

Isha Clarke's 2019 Bioneers keynote stressed building a global climate movement by prioritizing those most impacted by environmental injustice. She highlighted the climate crisis's roots in

Isha Clarke's 2019 Bioneers keynote stressed building a global climate movement by prioritizing those most impacted by environmental injustice. She highlighted the climate crisis's roots in racism, white supremacy, and greed, advocating for genuine intersectionality rather than tokenization. Learn more about Isha Clarke.

Since 1990, Bioneers has served as a fertile hub for social and scientific innovators offering practical, visionary solutions to pressing environmental and social challenges.

Find more talks, engaging articles, interviews, podcasts, and ways to take action by visiting Bioneers.org.

Visit TED.com for our complete library of TED Talks, transcripts, and translations. Discover personalized recommendations and explore inspiring ideas from leading

Visit TED.com for our complete library of TED Talks, transcripts, and translations. Discover personalized recommendations and explore inspiring ideas from leading thinkers on technology, science, business, and global issues. You're welcome to link, embed, and share these videos.

Featured is marine biologist Ayana Elizabeth Johnson, who shares five amazing reasons to love parrotfish – from creating white sand to colorful "wardrobe changes." She reveals what's at stake as climate change threatens coral reefs. Get personalized recommendations at TED.com/signup. For commercial use, submit a Media Request at media-requests.TED.com. Follow TED on social media via Twitter, Facebook, and YouTube.

In a GRIT Talk, Ram Seshadri discusses how energy efficiency, particularly with LED lighting, is as crucial as renewable energy. He explores the mechanics of white light emission from LED lamps

In a GRIT Talk, Ram Seshadri discusses how energy efficiency, particularly with LED lighting, is as crucial as renewable energy. He explores the mechanics of white light emission from LED lamps and how researchers approach material science for their development. Watch more from GRIT Talks.

UCTV, launched in 2000, is the University of California's broadcast and online media platform. It features diverse programming from UC campuses, national labs, and research institutions, covering science, health, arts, and public affairs. UCTV extends UC's teaching, research, and public service missions to a global audience. Visit UCTV for more.

Dal and Mike created "Trash Isles," a new country recognized by the United Nations, to combat plastic pollution. This initiative became one of 2018's most awarded campaigns, highlighting solutions

Dal and Mike created "Trash Isles," a new country recognized by the United Nations, to combat plastic pollution. This initiative became one of 2018's most awarded campaigns, highlighting solutions to environmental challenges.

Working at AMV BBDO London for eight years, Dal and Mike are board members whose globally recognized work includes AMV's first White Pencil, the UK's first Green Pencil at The One Show, two Cannes Grand Prix, and a prestigious Design Museum trophy. They also collaborated with figures like Al Gore and David Attenborough on the campaign.

This discussion was presented at a TEDx event. Learn more at ted.com/tedx.

The global resale market, currently valued at $24 billion, is projected to reach $51 billion within five years, underscoring its rapid expansion.

Yerdle collaborates with leading brands

The global resale market, currently valued at $24 billion, is projected to reach $51 billion within five years, underscoring its rapid expansion.

Yerdle collaborates with leading brands like Patagonia, REI, Eileen Fisher, Arc’teryx, and Taylor Stitch. They develop white-label channels, empowering these companies to control their own resale marketplaces. Key questions remain regarding Yerdle's strategy for achieving this success and the individuals CEO Andy Ruben persuaded to embrace their model.