This slideshow form Popular Science takes a step-by-step look at how to detect and uncover ancient buried settlements from satellite imagery.
"Lots of people live in Egypt. They always have. So how do you find ancient ruins when modern humans live and farm the land? Sarah Parcak of the University of Alabama at Birmingham uses images from a hyperspectral satellite, which has cameras that take pictures in various wavelengths. She sorts the data to reveal the high concentrations of organic matter and phosphorus content that mark ancient Egyptian house mounds. Then she gets a closer look and starts to dig."
FULL STORY: From Space to Shovel
Depopulation Patterns Get Weird
A recent ranking of “declining” cities heavily features some of the most expensive cities in the country — including New York City and a half-dozen in the San Francisco Bay Area.
California Exodus: Population Drops Below 39 Million
Never mind the 40 million that demographers predicted the Golden State would reach by 2018. The state's population dipped below 39 million to 38.965 million last July, according to Census data released in March, the lowest since 2015.
Chicago to Turn High-Rise Offices into Housing
Four commercial buildings in the Chicago Loop have been approved for redevelopment into housing in a bid to revitalize the city’s downtown post-pandemic.
How California Transit Agencies are Addressing Rider Harassment
Safety and harassment are commonly cited reasons passengers, particularly women and girls, avoid public transit.
Significant Investments Needed to Protect LA County Residents From Climate Hazards
A new study estimates that LA County must invest billions of dollars before 2040 to protect residents from extreme heat, increasing precipitation, worsening wildfires, rising sea levels, and climate-induced public health threats.
Federal Rule Raises Cost for Oil and Gas Extraction on Public Lands
An update to federal regulations raises minimum bonding to limit orphaned wells and ensure cleanup costs are covered — but it still may not be enough to mitigate the damages caused by oil and gas drilling.
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