21/09/2022

Search for clues may explain collapse of ancient city in Mexico

Built more than a thousand years before the Aztec arrived in central Mexico, Teotihuacan was once one of the largest cities in the world. Its stone temples, comparable in size to Egypt's pyramids, still draw fascinated visitors, ...

Researchers demonstrate chemically sensitive LiDAR method

Researchers have developed a new laser-based technique that can simultaneously perform LiDAR and remote chemical measurements. LiDAR, which stands for light detection and ranging, uses a laser to measure distances, or ranges. ...

The priorities for food-security research under extreme events

Fixing hunger is as challenging as ever. Many food producers, including farmers, hunters and fishers are food-insecure; meaning they're not always sure where their next meal will come from. More than 50% of the roughly 600 ...

Mexico ups protection at pre-Hispanic ceremonial site

Mexico has declared a pre-Hispanic site in the central state of Guanajuato as an archaeological monument zone protecting it from the possibility of encroaching development and expressing a commitment to continue excavating ...

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