There are many magazines that often contain news about math or mathematical content. The following lists just a few (notice most of these magazines are science-oriented):

Astronomy

21027 Crossroads Circle

P.O. Box 1612

Waukesha, WI 53187

Phone: 800-533-6644

Website: http://www.astronomy.com

Discover

90 Fifth Ave.

New York, NY 10011

Website: http://www.discovermagazine.com

New Scientist

Lacon House

84 Theobald’s Rd.

London WC1X 8NS

England

Website: http://www.newscientist.com

Popular Science

2 Park Ave., 9th Floor

New York, NY 10016

Phone: 212-779-5000

Fax: 212-779-5108

Website: http://www.popsci.com/popsci/

Science News

1719 N Street NW

Washington, DC 20036

Phone: 202-785-2255

Website: http://www.sciencenews.org

Science News For Kids

1719 N Street, N.W.

Washington, DC 20036

Phone: 202-785-2255

Website: http://www.sciencenewsforkids.org/

Scientific American

Scientific American, Inc.

415 Madison Ave.

New York, NY 10017

Phone: 212-754-0550

Website: http://www.sciam.com