Air Leak Detected on International Space Station: Investigation and Implications

A minor air leak on the International Space Station was detected, with pressure dropping from 760 to 720 mmHg. The crew used ultrasound equipment to find the leak, which was traced to a cracked tube in the Destiny module. The Russian-built Zwesta section was initially suspected. The Space Shuttle program, designed for ISS construction, was halted after the Columbia disaster. Future missions will focus on completing the ISS, with safety measures in place for shuttle issues. No date is set for the shuttle's return.

What was the cause of the leak that was eventually discovered?

What impact did the tragic loss of Columbia have on the construction of the International Space Station?