Question: Which Australian mammalogist wrote Chasing Kangaroos 
Context: Laurence Roy Heffernan (12 July 1925 – 24 September 1992) was an Australian professional wrestler.  Roy Heffernan toured all over the world, but is most famous for being one half of the original version of the tag team the Fabulous Kangaroos (with Al Costello).  The Kangaroos used an "Ultra Australian" gimmick complete with Boomerangs, bush hats and "Waltzing Matilda" as their entrance music.  The first incarnation of the Kangaroos is the most famous of all the Kangaroo versions and is often credited with popularizing tag team wrestling in the late 1950s and 1960s.  Costello and Heffernan are also regarded as one of the top tag teams to ever compete in professional wrestling. Timothy Fridtjof "Tim" Flannery (born 28 January 1956) is an Australian mammalogist, palaeontologist, environmentalist and global warming activist.  He was the Chief Commissioner of the Climate Commission, a Federal Government body providing information on climate change to the Australian public.  On 23 September 2013, Flannery announced that he would join other sacked commissioners to form the independent Climate Council, that would be funded by the community. Dylan Smith (born 18 July 1982) is a former Australian rules footballer who played for the Kangaroos and Fremantle in the Australian Football League (AFL).  He grew up in Woodend, approximately 60 km north of Melbourne, and played junior football for the Woodend Junior Football Club.  He left Woodend to take up a scholarship at Hailebury College.  In 1999, he was captain of the Sandringham Dragons who also won the premiership.  He was awarded the medal for the best player on the ground in the grand final.  He was originally drafted by the Kangaroos from Sandringham in the TAC Cup with selection 6 in the 2000 AFL Draft but only played 11 league games for them in three years.  At the end of the 2003 season he was delisted and Fremantle rookie listed him with the 26th selection in the 2004 AFL draft.  He played ten games for Fremantle in the next two years after being elevated to the senior list when Ryley Dunn fractured his collarbone midway through the 2004 season. Chasing Ghosts is the third album by the Australian metalcore band The Amity Affliction.  It was released on 7 September 2012 worldwide.  Roadrunner Records handled the release worldwide.  The theme of death and suicide is a centerpiece of the album.  The album was influenced by Finch's "What It Is to Burn" (2002).  "Chasing Ghosts" debuted at No. 1 on the Australian albums chart with 12,911 first week sales, becoming the band's first No. 1 on the chart and being one of the very few rock bands to achieve that position in Australia.  "Chasing Ghosts" was certified Gold by the ARIA for 35,000 shipments in 2013.  It is their only record to feature guitarist Imran Siddiqi and the first without keyboardist Trad Nathan. The Nashville Kangaroos is a United States Australian Football League team, based in Nashville, United States.  It was founded in 1997.  They play in the USAFL.  The club's mascot is a red kangaroo, a happy coincidence as the Nashville Zoo features red kangaroos in Kangaroo Kickabout, an interactive exhibit with 4,500 square feet of naturalistic Australian landscape. Chad Jonathon Jones (born 15 June 1984) is an Australian rules footballer currently listed with the Claremont Football Club in the West Australian Football League (WAFL), having previously played for the Kangaroos and the West Coast Eagles in the Australian Football League (AFL).  From Perth, Western Australia, Jones made his debut for Claremont in 2003, and was recruited to the Kangaroos in the 2003 National Draft.  Over three seasons at the club, he played six games, kicking a single goal, before being traded to West Coast prior to the 2007 season.  At West Coast, Jones played seven games over two seasons before being delisted.  Remaining with Claremont where he played as a key forward, Jones led the club's goalkicking in 2009 and 2010, also winning the Bernie Naylor Medal as the competition's leading goalkicker in both seasons.  He went on to play in Claremont's 2011 and 2012 premiership sides, having also represented Western Australia in two interstate matches. Chasing Kangaroos: A Continent, a Scientist, and a Search for the World's Most Extraordinary Creature, is a 2007 book (ISBN  ) by Professor Tim Flannery.  The book draws on three decades of travel, research, and field work to explore Australia's kangaroo.  Seventy species make up the kangaroo family, which includes wallabies and rat kangaroos. The Fabulous Kangaroos was a professional wrestling tag team that existed in various forms from 1957 until 1983.  The first incarnation of The Fabulous Kangaroos was formed when Italian Australian Al Costello teamed with Australia native Roy Heffernan and adopted an "Ultra Australian" gimmick complete with boomerangs, bush hats, and the song "Waltzing Matilda" as their entrance music.  Costello and Heffernan are arguably the most famous version of The Kangaroos, regarded as one of the top tag teams to ever compete in professional wrestling, and are often credited with popularizing tag team wrestling in the late 1950s and 1960s. The Australian national rugby league team (or the Kangaroos) have represented Australia in senior men's rugby league football competition since the establishment of the 'Northern Union game' in Australia in 1908.  Administered by the Australian Rugby League, the Kangaroos are ranked first in the RLIF World Rankings.  The team are the most successful in Rugby League World Cup history, having contested all 14 and winning 10 of them, failing to reach the final only once, in the inaugural tournament in 1954.  Only four nations have beaten Australia in test matches, and Australia have an overall win percentage of 67%. William Norton "Bill" Holsworth is an Australian mammalogist and philanthropist.  Since 1989, he and his wife Carol Holsworth have managed the Holsworth Wildlife Research Endowment to fund wildlife research by Australian postgraduate researchers.
Answer: Timothy Fridtjof