But a year on from the Frozen Planet row what became of the episode's tiny bear cubs?
The BBC denied misleading Frozen Planet viewers in an episode broadcast on BBC One in November 2011.
The move comes a year after an episode of Frozen Planet, featuring a polar bear with her cubs, was criticised.
Yet Mr Thompson has also presided over successes including Strictly Come Dancing and Frozen Planet, and the launch of the BBC iPlayer.
I've downloaded an episode of David Attenborough's Frozen Planet in about a minute and viewed YouTube videos in the middle of London without a hint of buffering.
In 2011, the BBC denied misleading viewers of Attenborough's frozen planet series with footage of newborn polar bear cubs filmed in an animal park, rather than in the wild.
Previously tested in beta with Frozen Planet and Secret Fortune airings, these apps let Antiques Roadshow viewers compete against others -- whether in the same room or across the country -- as they try to guess the value of items displayed on the show.
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After crash-landing on a frozen and desolate planet, Issac will fight not only for his own survival, but for that of all mankind, against an inhospitable planet and the deadly creatures who live there.
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We roped up at the Standhardt Col, a pass overlooking the Southern Patagonia Ice Field, one of the largest expanses of frozen water on the planet.
The closer we look, the more hostile the planet seems: parched and frozen in every season, its atmosphere inert and murderously thin, its surface scoured by solar winds.
In 1989, after a 12-year, 4-billion-mile space journey, Voyager 2 flew over the cloudtops of the giant planet Neptune and its moon Triton, sending back photographs of swampy areas, frozen lakes and craters.
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