How is oxygen 'sucked out' of our waterways?

A million fish have died in the Murray Darling basin, as oxygen levels plummet due to major algal blooms. Experts have warned we could see more mass deaths this week.

Seattle plant failure dumps millions of gallons of sewage

Millions of gallons of raw sewage and untreated runoff have poured into the United States' second-largest estuary since a massive sewage treatment plant experienced equipment failures that forced it to stop fully treating ...

Tourist boom threatens Sri Lanka's golden beaches

Tourists have flocked back to Sri Lanka's palm-fringed beaches since a bloody civil war ended in 2009, but environmentalists warn unchecked development means some areas are now so polluted, swimming there is a health hazard.

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