Architects have come up with spectacular concepts for vertical farms that would grow crops in city skyscrapers. But many horticulturists think the future of vertical farming isn't in skyscrapers but rather, in large, indoor warehouses lit up magenta by super-efficient LEDs.
California is about to become the first state to require shore power at its ports. A new law mandates at least half of a shipping line's fleet to shut down their diesel engines and plug into shore-side electric power when they unload their cargo. It's part of a larger effort to cut pollution at the state's busiest ports, but costs have been a sticking point.
Atmospheric scientist Ira Leifer installed special air sensors on a camper, then drove from Florida to California, measuring methane levels all along the way. More than 6,000 readings later, he found some noticeable spikes, especially around petrochemical plants and urban areas like Los Angeles.
Afghanistan is believed to be home to world-class mineral deposits, valued at up to $3 trillion and offering hope for the country's economic future. But in the current environment of uncertainty, investors are nervous and it could be many years before Afghanistan strikes pay dirt.
A new study confirms that the vast majority of scientists who research the climate accept that the planet is warming and human beings are largely responsible. Yet a large slice of the American public believes that scientists are deeply split about global warming.
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