In Norse cosmology and mythology, the massive ash tree Yggdrasil is said to support the whole universe, from the underworld known as Hel to the heavenly realm of Asgard.

Researchers found trace remains of roundworm, tapeworm, whipworm, and pinworm in the cesspit beneath the toilet.

Whether it was the cave where Vikings tried to ward off the apocalypse or the nude English giant that's baffled experts for centuries, these are the most astounding pieces of history news from 2021.

Mercy dogs, also known as casualty dogs, were first used by the German Army to help find wounded soldiers on the battlefield and to comfort the dying.

Discover the heroic life and tragic death of Lakota chief Sitting Bull, one of the most legendary Native American warriors of all time.

The octagonal gold ring dates to the third century and is inlaid with a green gemstone that has an image of Jesus as the "good shepherd" carved into it.

A number of extremely rare Pacific footballfish have washed up in California in 2021, both puzzling and delighting curious scientists.

Though the items, which include necklaces and sleep masks, emit low levels of ion radiation, they can be dangerous if worn consistently and permanently affect tissue and DNA.

Many militaries around the world have a long-standing history of silencing and even banning queer service members, but these fearless soldiers dared to protect their countries anyway.

Erik Charles Maund allegedly hired hitmen to kill his former girlfriend, Holly Williams, and her partner, William Lanway, after Lanway tried to blackmail him.

From the original Stonehenge to the real-life city of Sodom, discover some of the best archaeological finds from this year.