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20 June 2016

Observing bubbles from underwater gas seeps (video)

Natural oil and gas seeps exist on the ocean floor all over the world. Although humans have known about and exploited these natural resources for thousands of years, scientists know little about how oil and gas droplets disperse in deep water and how they affect underwater ecosystems.

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17 December 2015

Tiny fuel spills at gas stations can contaminate soil

The oil or gas leaks that grab headlines tend to be big events such as the Deepwater Horizon spill in 2010, but smaller-scale spills can be a problem, too, new research finds. Even a few drops dribbled from the nozzle of a gas station fuel pump can penetrate concrete and contaminate soil and groundwater below, according to researchers at Johns Hopkins University in Baltimore, Maryland.

In the past, regulators and researchers assumed that most spilled fuel would evaporate into the atmosphere, said Markus Hilpert, a hydrologist at Johns Hopkins University. The possibility that small fuel droplets might seep through the concrete pad under a gas station to the soil and water below was largely ignored, he said.

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