Details here:

“A Georgia group calling itself Teachers for Equal Time has asked that stickers be placed in all new physics textbooks which note that mutual attraction and relativity are not the only theories available to explain gravity and should not be taken as fact.

“Teachers for Equal Time hopes that the addition of the warning stickers will pave the way for the teaching of its alternative theory, Intelligent Grappling, the theory that certain intelligent and conscious agents ‘push’ things together.”

(Fear not, readers, this is satire. Thanks to Ben Wolfson for the pointer.)