Colin Dwyer

The first day back in the classroom went quickly. The half-day for students at Marjory Stoneman Douglas High School in Parkland, Fla., was their first at school in two weeks — but what the day lacked in length, it balanced with heartbreak and hope.

For the first time since a gunman claimed the lives of 17 of their classmates and teachers, wounded 14 others and took aim at many more, the survivors gathered again Wednesday to resume studies the killings put on pause.

Afghan President Ashraf Ghani opened an international conference Wednesday in Kabul with a substantial overture to his government's longtime antagonist: If the Taliban comes to the negotiating table and recognizes Ghani's government, the Afghan leader would in turn offer the insurgent group a role as a legitimate political party and release Taliban prisoners.

Updated at 7:40 p.m. ET

Walmart and Dick's Sporting Goods say they won't sell guns to customers under 21, and both are putting new restrictions on ammunition sales.

Dick's Sporting Goods, one of the largest sports retailers in the U.S., has announced it is immediately ending its sales of military-style semi-automatic rifles and is requiring all customers to be older than 21 to buy a firearm at its stores. Additionally, the company no longer will sell high-capacity magazines.

The South Korean women's curling team, hometown rock stars of these Winter Games, put on quite a show for a rollicking arena in Pyeongchang on Friday. The team defeated Japan in the semifinals, 8-7, claiming the nail-biter victory only after both teams went tied into an extra end.