sentences:  For its timely scientific and political implications, Lu and Steinhardt's work on medieval Islamic architectural tilings received substantial worldwide coverage on the front pages
  of a number of major newspapers,
  on the radio, and in magazines;
  the finding was identified as among the top 100 scientific discoveries of 2007 by "Discover" magazine.In 2004, Lu presented evidence in a single-author paper in Science that ancient Chinese craftsmen during the Spring and Autumn period used precision compound machines to craft spiral grooves on Chinese jade burial rings; 
  Lu had been introduced earlier to the grooved rings by Prof. Jenny So at the Smithsonian Institution.Lu discovered that these grooves follow the exact mathematical form of the Archimedes spiral, demonstrating the ability of ancient craftsmen to interconvert two types of motion precisely, in order to fashion the jade rings.