For some, the perks of ping pong tables, free snacks and flexible hours are enough to convince early startup hires to sign on the dotted line. For others, the potential to make an impact on a growing business and have a hand in shaping an industry is the main allure. With new and promising startups popping up in locations everywhere from Silicon Valley and New York City to burgeoning tech hubs like Boston and Miami, it’s clear that startup culture has its advantages — and its hardships.

Throughout the course of our series The First 100, we’ve been talking to hires #1 through 100 at successful startups from around the country, asking their opinions on early growth, tough decisions and the ups and downs of startup life. This week, we’re talking to employees #71 through 80 from companies like Pinterest, Homejoy and Birchbox.

Huffpost Science

From who built it to what it was used for, Stonehenge is surrounded by many enduring mysteries — and researchers from the University of Buckingham in England now say they’ve solved one of them.

“For years people have been asking why is Stonehenge where it is, now at last, we have found the answers,” David Jacques, an archaeology research fellow at the university, said in a written statement.

Last October, Jacques led an archaeological dig at a site 1.5 miles from Stonehenge. His team unearthed flint tools and the bones of aurochs, extinct cow-like animals that were a food source for ancient people. Carbon dating of the bones showed that modern-day Amesbury, an area that includes the dig site and Stonehenge itself, has been continuously occupied since 8820 B.C. Amesbury has now been declared the oldest continually occupied area in Britain.

Huffpost Crime

Police have released new information regarding a car crash in South Florida that killed a young mother.

Amanda Notebaert, 31, died after a sedan driven by her 30-year-old husband, Matthew, plowed into a canal March 9. The couple had attended a concert that night, and police have now confirmed that they were intoxicated when the fatal crash occurred.

In an arrest affidavit obtained by the Sun-Sentinel, Palm Beach County Sheriff’s deputies say that Matthew Notebaert and his wife had THC and alcohol in their systems, and were both naked from the waist down when they crashed. They said Amanda was on her husband’s lap when he sped the car off a dead-end dirt road and into the far side of a canal.

Huffpost Black Voices

Despite the Ku Klux Klan’s haunting history, one black police sergeant risked his life to go undercover as a “Black Klansman.”

In 1979, Colorado Springs police investigator Ron Stallworth called the number from KKK newspaper ad on a whim in the hopes of gathering information. What he didn’t expect was to be offered a membership, and eventually an invitation to lead the local KKK chapter for being perceived as a “loyal and dedicated” member of the notorious organization.