POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby
constitutes and appoints each of Melissa J. Gambol,
Linda E. Jolly, and Lewis A. Steverson signing singly,
the undersigned?s true and lawful attorney-in-fact to:

(1) execute for and on behalf of the undersigned the
application for EDGAR Form ID that is used to facilitate
electronic filings with the Securities and Exchange
Commission;

(2) execute for and on behalf of the undersigned Forms 3, 4
and 5 in accordance with Section 16(a) of the Securities
and Exchange Act of 1934 and the rules thereunder;

(3) do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to
complete the execution of any such Form 3, 4 or 5 and the
timely filing of such form with the United States Securities
and Exchange Commission and any other authority; and

(4) take any other action of any type whatsoever in
connection with the foregoing which, in the opinion of
such attorney-in-fact, may be of benefit to, in the best
interest of, or legally required by, the undersigned, it
being understood that the documents executed to this
Power of Attorney shall be in such form and shall contain
such terms and conditions as such attorney-in-fact may
approve in his/her discretion.

The undersigned hereby grants to each such attorney-in-fact
full power and authority to do and perform all and every act
and thing whatsoever requisite, necessary and proper to be
done in the exercise of any of the rights and powers herein
granted, as fully to all intents and purposes as the undersigned
might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all
that such attorney-in-fact, or his/her substitute or substitutes, shall
lawfully do or cause to be done by virtue of this power of
attorney and the right and powers herein granted.  The
undersigned acknowledges that the foregoing attorneys-in-
fact, in serving in such capacity at the request of the
undersigned, are not assuming any of the undersigned?s
responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934. Unless earlier revoked in a signed
writing, the undersigned grants such power and authority to
remain in effect until such time as he or she is no longer
required to file Forms 3, 4 or 5.

IN WITNESS WHEREOF, the undersigned has caused this
Power of Attorney to be executed as of this 5th day of March, 2024.

/s/ Michaune D. Tillman