Quantum wells enable record-efficiency two-junction solar cell

Researchers from the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) and the University of New South Wales achieved a new world-record efficiency for two-junction solar cells, creating a cell with ...

Nanoengineered cement shows promise for sealing leaky gas wells

Leaking natural gas wells are considered a potential source of methane emissions, and a new nanomaterial cement mixture could provide an effective, affordable solution for sealing these wells, according to a team of Penn ...

In US, changing self-concept can lower well-being

American culture values the freedom to change and reinvent one's self. A new study, however, reveals that Americans who do change tend to report a lower sense of well-being.

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