Video Share on Facebook Share on Twitter Share on Pinterest Share on LinkedIn During Facebook CEO Mark Zuckerberg’s testimony to Congress, not all of the questions lawmakers asked him made sense. Share on Facebook Share on Twitter Share on Pinterest Share on LinkedIn Articles You May Like Inside India’s Vicious Cycle of Coal and Heat Record share buybacks leave investors on edge | FT #shorts Gooseneck barnacles are one of the most expensive seafoods in the world. #seafood #soexpensive These blue gemstones are incredibly rare. #Benitoite #Gemstones #Mining High-quality black opal can cost over $10,000 per carat. #expensive #gemstone #luxury