After nearly 30 years on British Columbia’s North Shore Mountains, Betty Birrell embodies the spirit that life is a playground and you’re never too old to ride. Her enduring passion for

After nearly 30 years on British Columbia’s North Shore Mountains, Betty Birrell embodies the spirit that life is a playground and you’re never too old to ride. Her enduring passion for mountain biking is an inspiration.

Explore more from [Patagonia Mountain Bike](https://www.patagonia.com/mountain-biking/) and follow their journey on [Instagram](https://www.instagram.com/patagonia_mtb/). For additional content, [subscribe](https://pat.ag/Subscribe) to Patagonia's channels.

Patagonia is committed to addressing the threat of extinction facing all life on Earth. They leverage their business, investments, voice, and imagination to make a difference. Discover more at the [Official Patagonia site](https://pat.ag/Patagonia) or their main [Instagram](https://www.instagram.com/patagonia/).

"Solving for Z" explores IFMGA guide Zahan Billimoria’s relationship with the exhilarating highs and profound risks of big mountain skiing. The film delves into the gap between perception and

"Solving for Z" explores IFMGA guide Zahan Billimoria’s relationship with the exhilarating highs and profound risks of big mountain skiing. The film delves into the gap between perception and reality in high-consequence environments, questioning what we are willing to risk.

Education is paramount for mountain safety. Learn more about Zahan's Samsara Mountain Experience programs or find opportunities in your own area: samsaraexperience.com.

A Patagonia Presents film by Teton Gravity Research, "Solving for Z" features Zahan Billimoria, Kim Billimoria, and others.

TED unveils Countdown, a major global campaign to cut greenhouse gas emissions. Partnering with scientists, policymakers, and activists, this initiative invites everyone to participate. Learn how

TED unveils Countdown, a major global campaign to cut greenhouse gas emissions. Partnering with scientists, policymakers, and activists, this initiative invites everyone to participate. Learn how to get involved and help turn the tide on climate at countdown.ted.com.

Visit TED.com for our full library of talks, transcripts, and recommendations. Our channel features leading thinkers sharing ideas on Technology, Entertainment, Design, science, business, and global issues. Feel free to link, embed, or share these videos. For commercial use, submit a Media Request at media-requests.TED.com.

Written and directed by Kristin Chemis.

Jimmy senses something is off about his school friend. He doesn't realize the true extent of the problem until he spends a night at his friend's

Written and directed by Kristin Chemis.

Jimmy senses something is off about his school friend. He doesn't realize the true extent of the problem until he spends a night at his friend's house.

Labor unions increasingly support carbon pricing, recognizing its potential to drive business innovation and job creation. Join us to explore this policy and learn how to build relationships with

Labor unions increasingly support carbon pricing, recognizing its potential to drive business innovation and job creation. Join us to explore this policy and learn how to build relationships with labor unions.

Our speakers include John Braxton, Co-President Emeritus of AFT Local 2026 and a founder of US Labor Against the War, who helped originate AFT's climate change resolutions. Peter Knowlton, former General President of the United Electrical, Radio and Machine Workers of America (UE), brings 35 years of union leadership. Keon Liberato is President & Principal Officer of BMWED-IBT Local 3012. Arlene Grant, an artist and founder of ArlieSpeaks Media, has extensive experience in labor and employment disputes, and actively promotes environmental and social justice.

President-elect Barack Obama addressed the Global Climate Summit in Beverly Hills, California, on November 18-19, 2008, promising "a new chapter of American leadership on