Thousands brave heat as delayed Dubai Expo finally opensAustralia is among the 192 countries with pavilions at ExpoDUBAI - Thousands of people toured Dubai's Expo 2020 on the opening day on Friday, braving hot temperatures as the Covid-delayed world fair finally opened its doors one year late. - Human rights criticism -Some exhibitors are hoping Expo, set to be the most attended event since the pandemic, reflects a turning point in the global fight against the disease. Reem Al Hashimy, the Expo 2020 director general and the United Arab Emirate's minister of state for international cooperation, said officials were keeping a close eye on the situation. The UAE last month brushed off a European parliament resolution urging member states and businesses to boycott Expo over the country's human rights record. But criticism continued on Friday, with campaign group Human Rights Watch hitting out at the detention of activists.