Architects Louise Harpman and Scott Specht both began collecting plastic coffee cup lids in the 1980s, but only became aware of each other’s interest in the subject when they met as grad students at ...

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More goes into the design of a takeaway coffee cup than most of us realise ... hole (separate from the main drinking point) in the lid either. Turns out it’s actually a pretty smart safety ...

And then, of course, 16 ounces is somewhere in between. The type of lid on your travel mug can make a fairly big difference in how you experience drinking. Some have bigger openings, some smaller.