Karl Kruszelnicki AM is a scientist, who is best known as an author and science commentator on Australian radio and television. He is often referred to as Dr Karl.

He holds degrees in mathematics, biomedical engineering, medicine and surgery. He has also studied astrophysics, computer science, and philosophy. He has worked as a physicist, labourer, roadie for bands, car mechanic, film-maker, hospital scientific officer, biomedical engineer, TV weatherman, taxi driver, and medical doctor. Kruszelnicki is the Julius Sumner Miller Fellow in the Science Foundation for Physics at the School of Physics, University of Sydney.

Kruszelnicki was born in Helsingborg, Sweden to Polish parents. His mother's background was hidden from him for a long time, with his mother having told him that she was Swedish and a Lutheran but was, in fact, Jewish. Both of his parents were Holocaust survivors.

Kruszelnicki wrote and presented the first series of Quantum. He writes a weekly column for The Age and the Sydney Morning Herald newspapers on scientific "mythconceptions". His radio work includes a weekly science talkback show on Triple J which attracts up to 300,000 listeners and is available as a podcast. He often helps with other science and education Triple J promotions, such as the Sleek Geek Week roadshow with Adam Spencer and Caroline Pegram.

Susanna "Zan" Rowe (b. March, 1978, in Melbourne, Australia) is an Australian radio announcer, best known for her work on the nationally broadcast Triple J.

Rowe started out at SRA FM in 1996 (now SYN Radio) on a show called Run with the hunted, before moving to the Monday drive shift on premier community radio station 3RRR 102.7FM presenting Transit Lounge from 2002-2004.

In 2005, she took up a full-time position with Triple J. In 2006/7 she presented the 'Summer Lunch' (weekdays from 10am-2pm). On 29 January 2007 Rowe replaced Mel Bampton on 'Mel in the Morning' (which had replaced 'The Morning Show' in 2004) in the 9 a.m. to midday timeslot.

Rowe also regularly fills in for music director Richard Kingsmill on the new releases show '2012' (named after the current year).

In 2009, Zan joined music presenter Richard Kingsmill in presenting a special edition of rage, Triple J Hottest 100 of All Time, broadcast over two nights on the weekend of Friday 7 August 2009.

Schachtschneider, Karl Albrecht (born 11 July 1940, in Hütten bei Gellin (now Sitno, Szczecinek County, West Pomeranian Voivodeship), then part of Germany, today Poland) is a Professor Emeritus in public-, and civil law at "Der Rechts- und Wirtschaftswissenschaftlichen Fakultät der Universität Erlangen-Nürnberg" in Nuremberg, Germany.

He has been and is one of the strongest critics of the European Union and recently the Lisbon Treaty.

Recently Schachtschneider has made several public lectures and talks on the un-constitutionality of the Lisbon treaty, on its many problems, including the backdoor reintroduction of the death penalty into the EU in peace time, something expressly forbidden in most of Europes democracies, as Schachtschneider has been one of the very few to actually point out and voice an opinion of for a steadily increasing Euro-skeptic movement that has branches and relatively large organisations in all European countries ("Nej til EU", Sweden. "Juni-bevegelsen", Denmark ) and so on.

Karl Hans Albrecht (born 20 February 1920) is a German entrepreneur who founded the discount supermarket chain Aldi with his brother Theo. He is among the richest men in the world, with an estimated net worth in 2011 of $25.4 billion according to Forbes, which ranks him 10th in its 2012 list of billionaires – making him the oldest billionaire in the Top 20 list. Albrecht is the wealthiest person in Germany.

Karl and Theo Albrecht were born and raised in modest circumstances in Essen, Germany. Their father was employed as a miner and later as a baker’s assistant. Their mother had a small grocery store in the worker’s quarter of Schonnebeck, a suburb of Essen. Theo completed an apprenticeship in his mother’s store, while Karl worked in a delicatessen shop. Karl also served in the Wehrmacht during World War II. After the war, the brothers took over their mother's business. The first Aldi (Albrecht-Discount) was opened in 1961.^{[citation needed]}

In 1961, Aldi's operations were divided between the brothers, with Karl taking control of the more profitable Aldi Süd (South), and Theo managing Aldi Nord (North).

Karl Lauterbach (born February 21, 1963 in Düren) is a German scientist and politician (SPD). He is professor of health economics and epidemiology at the University of Cologne.

Lauterbach studied human medicine in Aachen, Düsseldorf and San Antonio (Texas). From 1989-1992 he has studied health policy and management as well as epidemiology at the Harvard School of Public Health in Boston, graduating with a Doctor of Science in 1992. From 1992 - 1993 he has held a fellowship at the Harvard Medical School.

Since 1998 Lauterbach has been director of the institute of health economy and clinical epidemiology at the University of Cologne, and he was appointed adjunct professor at the Harvard School of Public Health in 2008. He was a member of the Sachverständigenrat zur Begutachtung der Entwicklung im Gesundheitswesen ("Council of Experts for the development of health system") from 1999 until he was elected into the Bundestag in September 2005. He also was a member of the Rürup-Kommission, a committee of experts that was established to review the financing of the social insurance systems.