Welcome to Challenge International,

Challenge International is a connecting point where you and other forward-thinking business people, professionals, students, educators and civic leaders can explore the latest developments in renewable energy, green building and sustainable solutions for businesses and communities.

By attending interactive webcasts, you will be able to view and hear presentations that are given live online. During these events, experts will explain the strategies that were most effective for improving energy efficiency, reducing waste and facilitating sustainability within cities, businesses and universities in the USA and worldwide.

Challenge International Inc. was formed in 1996 by President & CEO, Sierra Dall. Over the years it has evolved from being a consultant - broker for web conferencing and conference calling services to a company that now also uses these services to bring businesses, professionals and communities together worldwide to explore sustainable solutions for today and the future.

Receive Invitations to Upcoming Webcasts

Contact us or call 303.281.9111

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DISCLAIMER: Challenge International, Inc. reserves the right to determine which organizations, products or services are appropriate for inclusion in its programs. Challenge International will not be held liable for the performance of participating organizations or the content of their websites or presentations. Nor will Challenge International, Inc. or any of its participating businesses be held liable for damages or injury as a result of your participation in any of the events or programs offered through Challenge International, Inc.
PRIVACY POLICY: All information obtained by Challenge International, Inc. will be used only for the purpose for which it was intended and will not be sold or distributed to third parties without permission.
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