Cows are able to hear lower and higher frequencies better than human beings.

The longest bout of sneezing recorded was by Donna Griffith. It began in January 13 1981 and continued until September 16 1983 and lasted for 978 days.

Around three quarters of the increase in CO2 levels from human activity over the last 20 years is from the burning of fossil fuels. The rest is made up largely of land use changes such as deforestation.

AMAZING FACTS