NASA Measures Countries' Carbon Dioxide Emissions
Environment and Climate

NASA Measures Countries' Carbon Dioxide Emissions

A pilot study calculated carbon dioxide emissions and removals in various countries using satellite observations. The researchers tracked the carbon dioxide emissions of more than 100 countries around the world with the help of an Earth-observing satellite from NASA. Pilot [more…]

Molecular Orbital Electron Sources
Physics

Molecular Orbital Electron Sources

A device that can control individual electrons with subnanometer and subfemtosecond precision could be the latest small electronic device developed. Vacuum, in which electrons travel from a nanoscale emitter to the target electrode via vacuum. [more…]