Can sushi ever be sustainable?

With many fish stocks in decline, the ethics of ‘sushinomics’ are seriously dubious

UN climate chief says the science is clear: there is no space for new coal

Christiana Figueres says Australia needs a national consensus to achieve maximum effort in fight to avoid dangerous climate change

Venom library to store poison from Australia’s deadliest creatures

Snakes, blue-ringed octopus, spiders, scorpions and platypus among species to be included in Australia’s first dedicated venom storage facility

Plan to put Tasmania’s south-west on tourist map fires up wilderness debate

A draft plan of management for the world heritage-listed area has opened a deep divide between conservationists who claim it is the greatest threat to the region in decades and tourism operators who say the proposed changes are long overdue

Koalas face extinction without stronger protection, say conservationists

Federal environment department says a recovery plan is in development, but conservationists warn the vulnerable koala needs urgent action