The geometric earthwork structures, carved into the ground with embankments and ditches, are in some cases more than 2,500 years old, researchers said.

With machine learning and a high-resolution imaging robot, scientists measured and mapped the extent of Earth’s carbon circulatory system.

More than 5 percent of the species is estimated to have been lost when a climate-fueled storm unleashed torrents of water, mud and debris.

More than 5 percent of the species is estimated to have been lost when a climate-fueled storm unleashed torrents of water, mud and debris.

The forthcoming order echoes President Trump’s decision to repeal executive orders that have protected other public lands from vehicles for decades.