‘Dark oxygen’ in depths of Pacific Ocean could force rethink about origins of life The GuardianScientists discover ‘dark’ oxygen being produced more than 13,000 feet below the ocean surface CNNDiscovery of ‘dark oxygen’ from deep-sea metal lumps could trigger rethink of origins of life Livescience.com‘Dark Oxygen’ Discovered Coming from Mineral Deposits on Deep Seafloor Scientific AmericanDeep Ocean Producing ‘Dark’ Oxygen, Study Finds Yale Environment 360