Key Findings from the Community
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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Victoria and Albert Museum
A skeleton of the alvarezsauroid Alnashetri cerropoliciensis—representing a highly complete alvarezsauroid skeleton from South America—provides evidence on the evolution of the peculiar anatomy and miniaturization within this unusual theropod dinosaur clade.