| Year | COP | Answer | Country | % Correct |
|---|---|---|---|---|
| 1995 | COP 1 | Berlin | Germany | 94%
|
| 1998 | COP 4 | Buenos Aires | Argentina | 89%
|
| 2004 | COP 10 | Buenos Aires | Argentina | 89%
|
| 2009 | COP 15 | Copenhagen | Denmark | 89%
|
| 1996 | COP 2 | Geneva | Switzerland | 83%
|
| 2015 | COP 21 | Paris | France | 83%
|
| 2013 | COP 19 | Warsaw | Poland | 83%
|
| 2023 | COP 28 | Dubai | United Arab Emirates | 78%
|
| 2014 | COP 20 | Lima | Peru | 78%
|
| 2019 | COP 25 | Madrid | Spain | 78%
|
| 2005 | COP 11 | Montreal | Canada | 78%
|
| 2006 | COP 12 | Nairobi | Kenya | 78%
|
| 2003 | COP 9 | Milan | Italy | 72%
|
| 2002 | COP 8 | New Delhi | India | 72%
|
| 2012 | COP 18 | Doha | Qatar | 67%
|
| 1997 | COP 3 | Kyoto | Japan | 67%
|
| 2001 | COP 7 | Marrakech | Morocco | 67%
|
| 2016 | COP 22 | Marrakech | Morocco | 67%
|
| 2000 | COP 6 | The Hague | The Netherlands | 67%
|
| 2011 | COP 17 | Durban | South Africa | 56%
|
| 2021 | COP 26 | Glasgow | United Kingdom | 56%
|
| 1999 | COP 5 | Bonn | Germany | 50%
|
| 2001 | COP 6-2 | Bonn | Germany | 50%
|
| 2017 | COP 23 | Bonn | Germany | 50%
|
| 2010 | COP 16 | Cancun | Mexico | 50%
|
| 2018 | COP 24 | Katowice | Poland | 44%
|
| 2022 | COP 27 | Sharm El-Sheikh | Egypt | 44%
|
| 2008 | COP 14 | Poznan | Poland | 39%
|
| 2007 | COP 13 | Bali | Indonesia | 33%
|