Caffeine content can range from as much as 160 milligrams in some energy drinks to as little as 4 milligrams in a 1-ounce serving of chocolate-flavored syrup. Even decaffeinated coffee isn't completely free of caffeine. Caffeine is also present in some over-the-counter pain relievers, cold medications, and diet pills.
wren. noun. 1  Any of various small brownish songbirds of the family Troglodytidae, having rounded wings, a slender bill, and a short, often erect tail. 2  All species but one, which is Eurasian, are found only in the Americas. 3  Any of various similar unrelated songbirds.
Other notable buildings by Wren include the Royal Naval College, Greenwich, and the south front of Hampton Court Palace. The Wren Building, the main building at the College of William and Mary, Virginia, is attributed to Wren. Educated in Latin and Aristotelian physics at the University of Oxford, Wren was a notable anatomist, astronomer, geometer, and mathematician-physicist, as well as an architect.