An ice-core record of hydrogen reveals that atmospheric levels vary in response to climate change and have increased drastically owing to human activity since the pre-industrial era. The apparent sensitivity of hydrogen cycling to environmental conditions should be considered when projecting the consequences of rising anthropogenic hydrogen emissions in a warming climate.
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George Lusty, director of enforcement at Ofcom, said it had "been clear" adult sites needed to deploy robust age checks to protect children in the UK form seeing porn.
Melissa Etheridge