Human behavior
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![Xerxes I art, All About History 125](https://cdn.mos.cms.futurecdn.net/EPcjNnYiX2D9RpC2kZPGmm-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/EPcjNnYiX2D9RpC2kZPGmm-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/EPcjNnYiX2D9RpC2kZPGmm-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/EPcjNnYiX2D9RpC2kZPGmm-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/EPcjNnYiX2D9RpC2kZPGmm-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/EPcjNnYiX2D9RpC2kZPGmm-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/EPcjNnYiX2D9RpC2kZPGmm-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/EPcjNnYiX2D9RpC2kZPGmm-1200-80.jpg 1200w)
Xerxes, the god-king of Ancient Persia, in All About History 125
By Jonathan Gordon published
Inside All About History 125: Learn how Xerxes I overcame rebels and plots to claim his throne and dominate West Asia.
![Divers explored the wreck of the US F4U–4 Corsair fighter-bomber on Iriomote Jima in March 2019.](https://cdn.mos.cms.futurecdn.net/rpuHutNxW6kqtDksrce4dJ-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/rpuHutNxW6kqtDksrce4dJ-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/rpuHutNxW6kqtDksrce4dJ-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/rpuHutNxW6kqtDksrce4dJ-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/rpuHutNxW6kqtDksrce4dJ-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/rpuHutNxW6kqtDksrce4dJ-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/rpuHutNxW6kqtDksrce4dJ-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/rpuHutNxW6kqtDksrce4dJ-1200-80.jpg 1200w)
30 incredible sunken wrecks from WWI and WWII
By Tom Metcalfe published
A look at some of the most notable underwater wrecks from WWI and WWII.
![Two explorers holding a kerosene lamp inside a massive, million-year-old dark cave.](https://cdn.mos.cms.futurecdn.net/NDDWAzSCD3W2iV7cBtstjj-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/NDDWAzSCD3W2iV7cBtstjj-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/NDDWAzSCD3W2iV7cBtstjj-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/NDDWAzSCD3W2iV7cBtstjj-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/NDDWAzSCD3W2iV7cBtstjj-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/NDDWAzSCD3W2iV7cBtstjj-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/NDDWAzSCD3W2iV7cBtstjj-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/NDDWAzSCD3W2iV7cBtstjj-1200-80.jpg 1200w)
10 amazing things we learned about our human ancestors in 2022
By Laura Geggel published
From when our ancient relatives began walking on two feet to the first known medical amputation on Homo sapiens, here's what we learned in 2022 about our human ancestors.
![Illustration of Bigfoot, a massive, gorilla-like creature covered in dark fur, standing on a rocky mountain.](https://cdn.mos.cms.futurecdn.net/NDJVw6bCNY49BFuiDAcboX-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/NDJVw6bCNY49BFuiDAcboX-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/NDJVw6bCNY49BFuiDAcboX-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/NDJVw6bCNY49BFuiDAcboX-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/NDJVw6bCNY49BFuiDAcboX-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/NDJVw6bCNY49BFuiDAcboX-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/NDJVw6bCNY49BFuiDAcboX-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/NDJVw6bCNY49BFuiDAcboX-1200-80.jpg 1200w)
The most famous Bigfoot sightings
By Patrick Pester published
Bigfoot, or Sasquatch, is one of North America's most enduring legends, with thousands of people claiming to have seen the giant ape-like creature. Here are the most famous Bigfoot sightings.
![A happy couple with their faces close together](https://cdn.mos.cms.futurecdn.net/GwxnnX738VuCb8VR6wU8MF-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/GwxnnX738VuCb8VR6wU8MF-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/GwxnnX738VuCb8VR6wU8MF-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/GwxnnX738VuCb8VR6wU8MF-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/GwxnnX738VuCb8VR6wU8MF-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/GwxnnX738VuCb8VR6wU8MF-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/GwxnnX738VuCb8VR6wU8MF-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/GwxnnX738VuCb8VR6wU8MF-1200-80.jpg 1200w)
What does love do to your brain?
By Michele Meyer published
Love stimulates the release of hormones such as oxytocin in certain brain regions.
![Public Christmas trees, like Rockefeller Center’s famous tree, didn’t start appearing in the U.S. until the 20th century.](https://cdn.mos.cms.futurecdn.net/3Rd9HnsgFZeSGUxcJn3MeU-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/3Rd9HnsgFZeSGUxcJn3MeU-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/3Rd9HnsgFZeSGUxcJn3MeU-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/3Rd9HnsgFZeSGUxcJn3MeU-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/3Rd9HnsgFZeSGUxcJn3MeU-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/3Rd9HnsgFZeSGUxcJn3MeU-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/3Rd9HnsgFZeSGUxcJn3MeU-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/3Rd9HnsgFZeSGUxcJn3MeU-1200-80.jpg 1200w)
How the Christmas tree tradition came to be
By Troy Bickham published
Evergreens have long served as symbols of the perseverance of life during the bleakness of winter, and the promise of the sun’s return.
![Oil painting by Ulpiano Checa showing the Huns entering Rome, led by Attila. They all are riding horses and carrying spears.](https://cdn.mos.cms.futurecdn.net/C3bJLpfXAcFB9ZcZ5tsgW9-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/C3bJLpfXAcFB9ZcZ5tsgW9-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/C3bJLpfXAcFB9ZcZ5tsgW9-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/C3bJLpfXAcFB9ZcZ5tsgW9-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/C3bJLpfXAcFB9ZcZ5tsgW9-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/C3bJLpfXAcFB9ZcZ5tsgW9-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/C3bJLpfXAcFB9ZcZ5tsgW9-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/C3bJLpfXAcFB9ZcZ5tsgW9-1200-80.jpg 1200w)
Attila the Hun raided Rome due to starvation, not bloodlust, study suggests
By Ben Turner published
The infamous barbarian's most devastating incursions took place in years with extremely dry summers.
![Stock image of a beautiful young woman studying a see through computer screen & contemplating.](https://cdn.mos.cms.futurecdn.net/tVrtsAkYEyyrcJsrgyEseR-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/tVrtsAkYEyyrcJsrgyEseR-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/tVrtsAkYEyyrcJsrgyEseR-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/tVrtsAkYEyyrcJsrgyEseR-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/tVrtsAkYEyyrcJsrgyEseR-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/tVrtsAkYEyyrcJsrgyEseR-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/tVrtsAkYEyyrcJsrgyEseR-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/tVrtsAkYEyyrcJsrgyEseR-1200-80.jpg 1200w)
What is Occam's razor?
By Joshua A. Krisch published
Is the simplest explanation always the best one, as Occam's razor states?
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