Brazil could achieve net-zero emissions by 2040 and emerge as a global leader in combating the climate emergency, Brazilian climatologist Carlos Nobre assessed during the opening of the first edition of Rio Nature & Climate Week (RNCW), held from June 2 to 6 in Rio de Janeiro. Nobre, one of the world's most respected climate scientists, warned of approaching tipping points in key Brazilian biomes but argued that the country has the potential to …