Engineering Grand Challenges

Can you name the engineering's current Grand Challenges?

HintGrand Challenge
Replace the middle letter: SONAR
Use the first letter of each capital's country: Paris, London, Pretoria, New Delhi, Muscat, Kathmandu
Element directly above silicon in the periodic table
1954 Best Picture winner: On the _____front
Country singer Keith _____'s hits include: 'Sombody Like You', 'You'll Think of Me', and 'Days Go By'
Complete the Mark Twain quote: 'The only way to keep your ______ is to eat what you don't want, drink what you don't like, and do what you'd rather not.'
Rhymes with Edison and Jettison
This organ is larger in humans than any other animal by percent of body weight.
Unscramble the chemical element: retoning
Popular ride at 4 Disney parks: Tower of _____
Complete the English word: _ y b _ _ _ p a _ e
Genre of TV which has accounted for the top-rated show 7 of the last 10 years (2000-10)
Word in common: Computer, Hygiene, Advertisement
Name the longest operating US space shuttle

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