Twenty-one species in the national park are invasive, five of which are among the 100 worst invaders globally

With more tigers on the loose, experts point to an unregulated captive breeding industry as the source of the trouble

Rate of spread of invasive species has ‘dramatically increased’

Judge finds that public participation in democratic processes is not the exclusive preserve of the privileged few who have access to the internet and can read English

Polyphagous shot hole borer looks set to become most damaging biological invasion in South Africa