1950 : Record Rain And Floods In Queensland stevengoddard 9 years ago X Privacy & Cookies This site uses cookies. By continuing, you agree to their use. Learn more, including how to control cookies. Got It! Advertisements CO2 was a very safe 310 ppm at the time. http://trove.nla.gov.au/ Advertisements Share this:Print RelatedWhat Level Of CO2 Is Safe?August 5, 2011With 12 comments1,000 Recorded Floods On The Yangtze RiverDecember 7, 2010With 18 comments1933 : Hottest June On Record In The USJune 2, 2012With 1 comment