As veganism gains in popularity, it has also become more political, sparking a struggle between moderates and zero-tolerance purists.

Professor Geoffrey Blainey is no stranger to controversy. Now he's challenging the view that today's climate change is either unique or largely the result of human behaviour.

Since keen birdwatchers are active along coastlines around the world, they can supply information that would otherwise be costly and difficult to gather, researchers say.

A Nationals minister has admitted personally phoning a government agency that was investigating potentially illegal land clearing on her property, according to documents released to Parliament.

Clearing for pastures or crops doubled in two years - and tripled in four - as farmers in NSW took advantage of weaker conservation rules.