Arizona Department of Public Safety (DPS) is an American law enforcement agency with its usual focus being protection of all Arizona highways.
 The Director is Frank L. Milstead, who began his 4-year term in February 2015.
 Its headquarters are in Phoenix.
Paul Workman is a Canadian journalist.
 He is the CTV News Washington Bureau Chief, filing his first report on February 3, 2009.
 Workman was formerly the South Asia Bureau Chief based in New Delhi, India.
 Prior to joining CTV News on July 13, 2006, he was a journalist for CBC News for over twenty years.
 Workman is guest-hosting the science news show "Daily Planet" on Discovery Channel.
Arizona Highways is a magazine that contains travelogues and artistic photographs related to the state of Arizona.
 It is published monthly in Phoenix by a unit of the Arizona Department of Transportation.
Quanta Magazine is an editorially independent online publication of the Simons Foundation covering developments in mathematics, theoretical physics, theoretical computer science and the basic life sciences.
 The articles in the magazine are freely available to read online.
 Several publications like "Scientific American", "Wired", and "The Atlantic", as well as international science publications like "Spektrum der Wissenschaft", have reprinted articles from "Quanta Magazine".
 "Undark Magazine" described "Quanta Magazine" as "highly regarded for its masterful coverage of complex topics in science and math."
 The science news aggregator "RealClearScience" ranked "Quanta Magazine" No. 2 on its list of "The Top 10 Websites for Science in 2016."
 Initially launched as "Simons Science News" in October 2012, it was renamed to its current title in July 2013.
 The founding editor-in-chief is Thomas Lin.
 "Quanta's" editorial team includes John Rennie (editor), Michael Moyer, Natalie Wolchover, Kevin Hartnett, Olena Shmahalo, Lucy Reading-Ikkanda and Jeanette Kazmierczak.
 On 2 May 2017 "Quanta" introduced a complete redesign and rebranding of its website.
During the 17th century there were many kinds of publications that told both news and rumours.
 Among these were pamphlets, posters, ballads etc.
 Even when the news periodicals emerged, many of these co-existed with them.
 A news periodical differs from these mainly because of its periodicity.
 The definition for 17th century newsbooks and newspapers is that they are published at least once a week.
 Johann Carolus' "Relation aller Fürnemmen und gedenckwürdigen Historien", published in Strassburg in 1605, is usually regarded as the first news periodical.
Science News for Students is an online magazine published by the non-profit Society for Science & the Public.
 It was started in 2003 to provide articles and other interesting science content to students, teachers and parents.
 The magazine is based in Washington DC.
Society for Science & the Public (SSP), formerly known as Science Service, is a 501(c)3 non-profit organization dedicated to the promotion of science, through its science education programs and publications, including the bi-weekly "Science News" magazine and the free-accessible online "Science News for Students".
StarDate is a science radio program of the University of Texas at Austin McDonald Observatory, broadcast on over 360 radio stations.
 "StarDate" is a daily guide to the night sky and breaking astronomical news.
 Typically heard without formal introduction, "StarDate" is a self-contained science news feature interwoven with routine radio programming.
 It is the longest-running science outreach program on U.S. radio.
 Created by KNOW Radio (Austin) News Director Grady Blount in 1977, the short synoptic format of "StarDate" was borrowed from a daily radio news feature called "90 Seconds", and was intended to invoke the immediate sense of the fictional term stardate used in the opening monologue of the 1960s television series "Star Trek".
Science News is an American bi-weekly magazine devoted to short articles about new scientific and technical developments, typically gleaned from recent scientific and technical journals. "Science News" has been published since 1922 by Society for Science & the Public, a non-profit organization founded by E. W. Scripps in 1920.
 American chemist Edwin Slosson served as the publication's first editor.
 From 1922 to 1966, it was called Science News Letter.
 The title was changed to "Science News" with the March 12, 1966 issue (vol.
 89, no. 11).
Computer Magazine (and their website www.ComputerMagazine.com) is a popular magazine and online news site on computing and technology, offering current news and reviews of popular and new business and consumer technologies, software, hardware, mobile computing, tablets, PCs, Macs, Windows, Linux, telecom, cellular, wireless, data, cloud and science news on digital technologies and everything in the "tech-sphere and digi-verse", especially focused on information technology, devices, software and services and related subjects, such as networking, servers, data centers and corporate data infrastructure technologies, and the Internet.
 Their online site, since 1997, is located at ComputerMagazine.com.
 "Computer Magazine" produces industry instructional and a popular ongoing webcast/podcast talk show and performs evaluations and reviews of IT industry technology products, hardware, software and services with objective reporting widely respected as independent and objective, and trusted in the industry.
 "Computer Magazine" is a free publication (in addition to their webcasts and other resources) sponsored by the nonprofit UTCP (United Technology and Computing Professionals) organization, and as such charges no fees for the publication nor is influenced by advertising, so their reviews are relied on in the industry and considered unbiased and thorough.
 "Computer Magazine" is one of the early large technology publications and resources available on the web still existent and thriving today and that has remained independent.
 ComputerMagazine.com is a tech news and resources consolidator that publishes part of the site in a semi-time line/blogging format that is popular among their wide following of subscriber and non-subscriber readers, allowing readers to respond and comment on various articles.
 Site contributors include many of the well known technology authors, experts and publication sources, content and articles are provided by major technology syndicators and by external expert technology sources (such as "Computer World", "Information Week", "Network World", "Wired," "Time", etc.) as well as "Computer Magazine" staff writers, and is currently managed and edited by the industry veteran Christopher Swearingin an MCSE and former CIO and regarded author as well as contributor/reporter for "Computer Magazine" and other publications.

Question: Which periodical is published more frequently, Science News or Arizona Highways?
Answer: Science News