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The fact that we can even see this image / gif is a wonderful advance in knowledge. Thanks to the ESA.

I'm guessing that non-destructive testing would be x-rays or ultrasound, or testing for cracks with penetrating dye. Interpretation and performing the first two methods are highly skilled jobs, dye penetration is easier but doesn't usually pick up the pre-crack fatigue changes. (This is based on...

I don't think the Gulf Stream is so much slowing down, as altering course a little in the short term. A large and sustained addition of meltwater - ie fresh - would probably have serious longer term results (as in the model quoted). Larger affects in the short term to the weather / climate tend...