Throwing down the gauntlet. Provost Peter Salovey said he would consider regrowing his fabled mustache if University President Richard Levin agrees to grow one as well. Levin’s response? Not likely.

That was (not) easy. The Staples office supplies store at 84 Whalley Ave. will close Nov. 21, just months after the neighboring Rite Aid store went out of business.

Green’s a piece of cake. Blue frosting on each cupcake in the dining halls Tuesday read “350,” representing, in parts per million, the level scientists have identified as the safe upper limit for carbon dioxide in our atmosphere. The desserts came in anticipation of Saturday’s International Day of Climate Action.

Speaking of climate action, Linda Greenhouse LAW ’78 (no relation to the gases), the former Supreme Court reporter for The New York Times and a lecturer at the Law School, has been elected to the Phi Beta Kappa Society Senate. Phi Beta Kappa is the nation’s oldest academic honor society with more than half a million members throughout the country.

The sound of Art Garfunkel. The Grammy award-winning singer, songwriter and actor from the world-renowned duo Simon & Garfunkel, will participate in a Morse College Master’s Tea at 4 p.m. in the Swing Space Activity Room.

Happy b-day Chaz! In other music news, modernist composer Charles Ives 1898 would have celebrated his 135th birthday yesterday. The School of Music honored the occasion with a podcast about his life and work.

Nice try, muggles. Cross Campus played host to another Quidditch match yesterday. Emma Watson was nowhere to be found, and Yalies still can’t fly.

Cue the paparazzi. Handsome Dan was spotted taking a stroll at 9:25 a.m. with an unidentified male on York Street. Dan was not readily available for comment.

Less than mood lighting. Lights flickered on and off in Silliman Dining Hall during Tuesday’s lunch, causing minor annoyance to diners.

¡Fiesta! Today is the International Day of the Nacho. No nachos on the dining hall menus, though.

This day in Yale history

1980 Angry students stole the A. Bartlett Giamatti Memorial Moose bust from the Ezra Stiles dining hall, demanding in a ransom note, “Cancel midterms, OR WE’LL EAT HIM!”