overnight audience shares, with consolidated viewers supplied by BARB. Reception "On Thin Ice" in the United States Uncertainty surrounded whether the series' seventh episode, which focuses on climate change, would air in the United States, where it is a politically sensitive issue. In an interview with Radio Times, Attenborough explains that "data from satellites collected over the last 40 years show a drop of 30% in the area of the Arctic sea ice at the end of each summer." Former UK Conservative politician Lord Lawson dismissed the idea as "alarmism", provoking a polar oceanographer working with the show to describe his criticism as "patronising", wrong and the "usual tired obfuscation and generalisation". Attenborough subsequently rebutted Lawson's allegations. This episode was initially not expected to be shown in the United States. Ten networks that would have run the episode opted out, citing fear of controversy. On 6 December 2011, the Discovery Channel announced it would air the seventh and final episode of Frozen Planet. "On Thin Ice" includes on-camera shots of Attenborough, who narrates the British version, discussing what shrinking glaciers and rising temperatures mean for people and wildlife that live in the region, as well as the rest of the planet. The music for this episode was composed by Barnaby Taylor. Ratings The series quickly became a ratings success in the UK, with the second episode broadcast on 2 November 2011 becoming the highest-rated natural history programme there since 2001. The series drew an average audience of 8.67 million viewers. Awards In May 2012, Frozen Planet won in three categories at the British Academy Television Craft Awards, collecting prizes for best sound, best editing, and best photography. At the BAFTA Television Awards, Frozen Planet was nominated for Best Specialist Factual and the YouTube Audience Award, but lost in both categories. It was also nominated for a Royal Television Society award. The US broadcast won four prizes at the Primetime Creative Arts Emmy Awards in September 2012, including outstanding nonfiction series, cinematography, sound editing, and picture editing. The following month, it won in three categories at the Wildscreen Festival in Bristol, UK, taking the Panda Awards for best sound, best cinematography, and best series, the latter shared with Human Planet. In January 2013, the series won the public vote for Best Documentary Series at the UK's National Television Awards, beating out Big Fat Gypsy Weddings, One Born Every Minute and Planet