Great apes tease each other just like humans do, says new study

[Scientists observed playful teasing in orangutans, chimpanzees, bonobos and gorillas.]

Deforestation: Which countries are still cutting down trees?

World leaders have pledged to end and reverse deforestation by 2030.

But in Brazil's Amazon rainforest it has hit its highest level in over 15 years - and progress elsewhere is challenging.

Brazil: Illegal logging continues

Some 60% of the Amazon rainforest is in Brazil, and it plays a vital role in absorbing harmful CO2 that would otherwise escape into the atmosphere.