At sea, scientists drill into crater for dino clues

Sharks swim around a platform off Mexico's east coast as scientists drill deep into the ocean floor, extracting the remains of the asteroid widely blamed for the demise of the dinosaurs.

Widespread loss of ocean oxygen to become noticeable in 2030s

A reduction in the amount of oxygen dissolved in the oceans due to climate change is already discernible in some parts of the world and should be evident across large regions of the oceans between 2030 and 2040, according ...

Ocean toxicity hampered the rapid evolution of complex life

By examining rocks at the bottom of ancient oceans, an international group of researchers have revealed that arsenic concentrations in the oceans have varied greatly over time. But also that in the very early oceans, arsenic ...

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