Cities with large population densities may have less carbon emissions per capita compared to suburban areas due to public transportation services and walking accessibility, Boston University ...

Increasing population and employment density in metropolitan areas could reduce vehicle travel, energy use, and CO2 emissions from less than 1 percent up to 11 percent by 2050, a new report has said.

Clathrate hydrates (Fig. 1) are cage-like structures of water molecules that house guest gas species. They form when the gas interacts with ice under high-pressure and low-temperature conditions, and ...

Sandia began studying these turbines more than five years ago as part of the lab’s work on advanced nuclear reactors. They selected supercritical CO2 as the working fluid operating at approximately 73 ...

LOS ALAMOS, N.M., July 2002 -- A process designed around the use of supercritical carbon dioxide (CO2) promises to enable the production of higher-density microchips than can be made today, allowing ...

The global ocean “conveyor belt” circulation, shown in part here as red and blue lines, circulates cooler seawater below the surface and warmer seawater at the surface throughout the world’s oceans.

MAUNA LOA OBSERVATORY, Hawaii — Carbon dioxide, the gas largely blamed for global warming, has reached record-high levels in the atmosphere after growing at an accelerated pace in the last year, say ...