A startup called Petra uses super-hot gas to penetrate bedrock. The method could make it cheaper to move utilities underground—and make electric lines safer. 

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A startup called Petra uses super-hot gas to penetrate bedrock. The method could make it cheaper to move utilities underground—and make electric lines safer. Learn about your ad choices: dovetail.prx.org/ad-choices

A startup called Petra uses super-hot gas to penetrate bedrock. The method could make it cheaper to move utilities underground—and make electric lines safer. 

Learn about your ad choices: <a href="https://dovetail.prx.org/ad-choices" rel="noopener noreferrer">dovetail.prx.org/ad-choices</a>

This New Tech Cuts Through Rock Without Grinding Into It

Get in-depth coverage of current and future trends in technology, and how they are shaping business, entertainment, communications, science, politics, and society.

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Get in-depth coverage of current and future trends in technology, and how they are shaping business, entertainment, communications, science, politics, and society.

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This New Tech Cuts Through Rock Without Grinding Into It

This New Tech Cuts Through Rock Without Grinding Into It

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