Question: Which channel aired a television program hosted by an American journalist in 2010 and talked about the worst case future of humans?

Context paragraphs:
America's Worst Driver: America's Worst Driver is an American 2010 reality television program on Travel Channel, based on the television series "Britain's Worst Driver" and "Canada's Worst Driver", part of the Worst Driver television franchise.  Hosted are Alonzo Bodden and Jill Simonian, contestants from 8 cities compete to "not" be named the worst driver in their respective cities, because the contestants who are named the worst driver in their city has their car destroyed.  Everyone else wins prizes which range from free oil changes to a trip.  In the finale, the 8 drivers meet up in Los Angeles to show who is the most improved, with each driver winning a new car, other than the loser.  In the finale of season one, Matt Conn of San Francisco was named America's Worst Driver and had a car representing him torn apart by Robosaurus.

Kudlow &amp; Cramer: Kudlow & Cramer is a CNBC American business and politics television program hosted by conservatives Lawrence Kudlow and Jim Cramer, which aired weekdays from 2002 to 2005.  The program initially ran at 8 PM Eastern Time, taking over the time slot of "Hardball with Chris Matthews" (which moved to sister channel MSNBC), but later moved to the 5 PM slot.

Bob Woodruff: Robert Warren "Bob" Woodruff (born August 18, 1961) is an American television journalist.

Contingent liability: Contingent liabilities are liabilities that may be incurred by an entity depending on the outcome of an uncertain future event such as the outcome of a pending lawsuit.  These liabilities are not recorded in a company's accounts and shown in the balance sheet when both probable and reasonably estimable as 'contingency' or 'worst case' financial outcome.  A footnote to the balance sheet may describe the nature and extent of the contingent liabilities.  The likelihood of loss is described as probable, reasonably possible, or remote.  The ability to estimate a loss is described as known, reasonably estimable, or not reasonably estimable.  It may or may not occur.

The Kelly File: The Kelly File was an American news television program hosted by journalist and former attorney Megyn Kelly on the Fox News Channel.  The program is a spinoff of "The O'Reilly Factor", and focuses on late-breaking stories in a live format as well as news analysis and in-depth investigative reports interspersed with newsmaker interviews.

PrankStars: PrankStars was a 2011 American 6-episode reality television series that aired monthly and employed the use of a hidden camera.  The series premiered on Disney Channel on July 15, 2011, and was hosted by "Pair of Kings" and "Hannah Montana" star, Mitchel Musso.  The television program portrayed scenarios in which children and teenagers met their favorite stars in "unpredictable and humorous" settings that had been engineered by their friends and family.  The show was Disney Channel's first reality series since the "Totally in Tune" show.  In Canada, Family Channel aired two episodes of "PrankStars" on September 30, 2011, and a total of four episodes were originally supposed to broadcast before the series was withdrawn.  The fourth episode aired a day before Musso's mid-October 2011 arrest on a charge of driving while intoxicated (and subsequent removal from the cast of "Pair of Kings"), and the remaining two episodes premiered solely in the United Kingdom and Latin America, they premiered in the U.S. in November 2016 on Disney XD.

East St. Louis riots: The East St. Louis riots, or East St. Louis massacres, of May and July 1917 were an outbreak of labor- and race-related violence that caused the death of at least 40 Black people and approximately $400,000 in property damage (over $8 million, in 2017 US Dollars ).  The events took place in East St. Louis, Illinois, an industrial city on the east bank of the Mississippi River across from St. Louis, Missouri.  They have been described as the worst case of labor-related violence in 20th-century American history, and among the worst race riots in U.S. history.  The local Chamber of Commerce called for the resignation of the police chief.  At the end of July, some 10,000 people marched in silent protest in New York City in condemnation of the riots.

Zeus (American football): Zeus is a computer program developed by End Game Technologies that models and predicts the outcomes of coaching decisions in American football games.  The program is designed to produce statistical outputs showing the expected odds of winning given choices of potential play calls and roster choices.  It is capable of simulating 1,000,000 games in a few seconds, and was developed using extensive research on historical data from National Football League games.  It expresses its output in terms of Game Winning Chance, which is the probability that the specified team will win the current game.  It also evaluates its output using a range of possible "worst case" scenarios to determine a Confidence Factor of 1 to 10 for its results.

Polylux (TV program): Polylux, the self-appointed "last/worst on the first [channel]" (""Das Letzte im Ersten""), was a weekly half-hour German television program hosted by Tita von Hardenberg.  It was produced by RBB for "Das Erste" and was broadcast in the timeslot on Thursdays at 11:15 CET.

Earth 2100: Earth 2100 is a television program that was presented by the American Broadcasting Company (ABC) network on June 2, 2009 and was aired on the History Channel in January 2010 and was shown through the year.  Hosted by ABC journalist Bob Woodruff, the two-hour special explored what "a worst-case" future might look like if humans do not take action on current or impending problems that could threaten civilization.  The problems addressed in the program include current climate change, overpopulation, and misuse of energy resources.

Supporting paragraphs: Earth 2100 Bob Woodruff
Answer: History Channel