According to the data we calculated, based on a database released by the Global Carbon Budget 2018, Singapore toped world for fossil CO2 emissions per square kilometer in 2017.The amount of fossil CO2 emissions per square kilometer in Singapore in 2017 was 89764.5 tons (232490.2 tons/mile2), 2.3 times the amount of Hong Kong (38978 tons/km2 or 100955 tons/mile2), 27 times the … [Read more...] about Singapore Tops World for Fossil CO2 Emissions Per Square Kilometer