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- Tech
Hydrogen hopes in carbon shells
Lithium atoms added to buckyball surfaces bestow on these molecules a remarkable capacity to store hydrogen.
- Earth
Air conditioning could heat the world
Global warming predicted for the coming decades may decrease winter heating bills in some parts of the United States, but producing the extra electricity needed for summertime air conditioning will create increased emissions of planet-warming carbon dioxide.
- Physics
On-chip lamp scores a bull’s-eye
Etching nanoscale, concentric ridges around a lamp-on-a-chip known as a light-emitting diode, or LED, brightens the device's glow seven-fold.
- Earth
Rogue alga routed
An invasive-species action team has eradicated one of the world's worst weeds, a marine alga, from a California lagoon, its only known foothold in North America.
