The dagger found in Jarosław Forest probably came from outside of Poland as copper objects in the region were considered "extremely rare" 4,000 years ago. Museum in Jarosław Orsetti HouseThe dagger was found by chance by a metal detectorist. Thousands of years ago, deep in the forests of Poland, someone dropped a copper dagger. Now, it’s been found by chance near the city of Korzenica. Not only is the 4,000-year-old dagger a rare object for the region and the time, but it’s also the oldest metal dagger ever discovered in Poland’s Podkarpackie province.

During the counterculture era, a tiny Indian state became home to European and American hippies who wanted to flee the West. Hippies gather in a hut in Goa, India. As one of the last stops on the Hippie Trail, Goa became a popular destination for young hippies looking to flee Western culture. I Love Goa/Facebook The hippie movement was about rejecting materialism and career expectations and accepting things like free love and psychedelic drugs.

History didn't happen in black and white — experience one of the country's greatest hardships in all its heartbreaking color. A young girl stands by a fence, a doll in her hand. Location unspecified. Circa 1941-1942. Library of Congress A railroad worker covered in dirt and soot after a long, hard day of work. Chicago, Illinois. December 1942. Library of Congress A store advertises that it has live fish for sale.

Alkali Metals in Water Explode; No One Knows Why This one used to be settled science. Alkali metals, such as cesium and potassium, would interact with water, release hydrogen vapor, and burn so hot they explode. Definitely cool, but not deeply mysterious. Enter popular YouTube vlogger Thunderf00t. As a working scientist, Thunderf00t couldn’t leave well enough alone and started fooling around with alkali metals. When he did, he discovered a few things that nobody had noticed in the 200-odd years chemists had been performing these reactions at parties.

While planes and cars have overtaken trains as the modern mode of travel, these beautiful train stations remind us of the grandeur of the rails.Source: Wikipedia Beautiful Train Stations: Gare De Liege-Guillemins, Belgium Source: AAS Architecture Designed by Santiago Calatrave, this stunning train station made its debut in 2009 and boasts soaring arches made of steel, glass and white concrete which extend 105 feet in the air. Source: Kazeo Sao Bento, Portugal Source: Wikipedia