Question: Heather Barnett gave a talk about slime mould on a program from what media organization which posts talks online for free distribution, under the slogan "ideas worth spreading"?

Context paragraphs:
Physarum aeneum: Physarum aeneum is a slime mould species from the order Physarida.  It is one of a few slime moulds mainly common in the tropics and subtropics.

Al-Sadr Online: Al-Sadr Online is the official website of the High Board for Media of Al-Sadr's Office.  The High Board is the media organization of Muqtada Al-Sadr, a Shia Muslim Iraqi religious and political leader.  The site, which commenced operation in 2007, performs several functions in support of Sadrist objectives.  The site's distinct format includes a section in which Al-Sadr offers religious opinions in response to queries from site followers.  Al-Sadr Online publishes news about Sadrist political, social, and religious activities in southern Iraq and the Arab world.  In addition, the Board's staff also posts commentary on issues pertaining to Iraqi and pan-Arab politics as well as some international news.  The site posts numerous links to pages of organizations sympathetic to the Sadrist Movement, many of which are based in Iran and Lebanon.  Al-Sadr Online posts most of its content in Arabic, though it does maintain a less robust English page.

Lycogala epidendrum: Lycogala epidendrum, commonly known as wolf's milk, groening's slime is a cosmopolitan species of plasmodial slime mould which is often mistaken for a fungus.  The aethalia, or fruiting bodies, occur either scattered or in groups on damp rotten wood, especially on large logs, from June to November.  These aethalia are small, pink to brown cushion-like globs.  They may excrete a pink paste if the outer wall is broken before maturity.  When mature, the colour tends to become more brownish.  When not fruiting, single celled individuals move about as very small, red amoeba-like organisms called plasmodia, masses of protoplasm that engulf bacteria, fungal and plant spores, protozoa, and particles of non-living organic matter through phagocytosis (see slime mould for more information).

Heather Barnett: Heather Barnett is an English artist and university professor working in BioArt, environmental art, and food art.  She works with slime mould.  In general, her work with slime mould involves starting the mould to grow in one spot, setting a piece of food that is attractive to the slime mould some distance away (since this is a small organism, "a distance away" could only be a few inches), letting the slime mould grow toward the food, and documenting the process.  She has given a TED talk about slime mould.  She is the founder of the Slime Mould Collective, a group of scientists and artists who work with slime mould.  She was also the 2014 "Artist-in-Restaurant" at the London restaurant Pied-a-Terre.  For four years the restaurant has chosen an artist each year to spend time at the restaurant, eating and lingering in the working areas of the kitchen observing, and then to produce artworks reflecting the experience.  She has exhibited at the Victoria & Albert Museum and the Science Museum, London.

Slime mold: Slime mold or slime mould is an informal name given to several kinds of unrelated eukaryotic organisms that can live freely as single cells, but can aggregate together to form multicellular reproductive structures.  Slime molds were formerly classified as fungi but are no longer considered part of that kingdom.  Although not related to one another, they are still sometimes grouped for convenience within the paraphyletic group referred to as kingdom Protista.

TED (conference): TED (Technology, Entertainment, Design) is a media organization which posts talks online for free distribution, under the slogan "ideas worth spreading".  TED was founded in February 1984 as a conference, which has been held annually since 1990.  TED's early emphasis was technology and design, consistent with its Silicon Valley origins, but it has since broadened its focus to include talks on many scientific, cultural, and academic topics.

Danilo Restivo: Danilo Restivo (born April 1972) is an Italian man serving a life sentence with a 40-year tariff in Britain for the 12 November 2002 murder of Heather Barnett in Bournemouth, England.  Investigators suspected Restivo had murdered Barnett because of his involvement in the 12 September 1993 disappearance of Elisa Claps in Potenza, but they were unable to charge him because of lack of evidence.  Subsequent to the 2010 discovery of Claps's body, Restivo was tried for the murder of Barnett, with evidence of similarities in ritualistic placing of hair on the bodies of Claps and Barnett being heard by the English court.  He was found guilty of murdering Barnett, and later convicted "in absentia" of the murder of Claps by an Italian court.  Lawyers for Omar Benguit, convicted for the 12 July 2002 murder of a Korean woman, Jong Ok-Shin, in Bournemouth, suggested that Restivo may have committed the crime.  Benguit was granted an appeal hearing.  In April 2014 his conviction was upheld.

Ceratiomyxa: "Ceratiomyxa" is a genus of plasmodial slime mould within the Eumycetozoa, first described by Pier Antonio Micheli.  They are widely distributed and commonly found on decaying wood.

Samuel Moody Grubbs House: The Samuel Moody Grubbs House is a historic house located at 805 E. Union Ave. in Litchfield, Illinois.  The house was built in 1873-74 for Samuel Moody Grubbs, a banker who later became Litchfield's mayor.  George Ingham Barnett, a prominent St. Louis architect, designed the Second Empire house; it is the only standing Barnett design in Illinois.  The design is typical of the second half of Barnett's career, when he shifted from Italianate to Second Empire designs, and represents a popular style in postbellum America.  A mansard roof with slate tiles tops the house; a cornice running along the roofline features paired brackets.  The front of the house features a wraparound porch supported by columns.  The house's corners have bold quoins.  In a deviation from the typical rectangular plans of Second Empire houses, Barnett gave the house a cross axis plan with projecting wings.

Lara Stein: Lara Stein (Born : November 28, 1966) is TEDx Founder and former Director of TEDx and the TED Prize, having overseen the strategy, creation, development and implementation of the TEDx program at TED.  TEDx is a program of local, self-organized events that bring people together to share a TED-like experience.  TED is a nonprofit organization devoted to Ideas Worth Spreading, which started as a four-day conference in California 30 years ago.  Through Stein's leadership TED expanded from two annual conferences, into a global community of 9,000 TEDx events in 1,200 cities taking place in 133 countries.  Most recently Lara was the MD of Global for Singularity University, driving global expansion and strategy.

Supporting paragraphs: Heather Barnett TED (conference)
Answer: TED