Rio has the world's bluest sky.
Anya Hohnbaun, a TV researcher, visited 20 nations in 2006, including New Zealand and South Africa, in pursuit of the country with the bluest sky. Using a spectrometer produced by experts at the British National Physical Laboratory, she arrived at the scientific conclusion that Rio de Janeiro had the bluest sky.
Scientists thought this dinosaur-era tree went extinct 150 million years ago — but then it was found growing wild in Australia.
By sowing this unusual plant, the soil's physio-chemical characteristics are altered, increasing the levels of nitrogen and potassium.