The Earth is heating up, as is conflict in the Middle East. The world economy and Ukraine's defense against Russia are sputtering along. Artificial intelligence could upend all our lives.

The to-do list of global priorities has grown for this year's edition of the World Economic Forum's gabfest of business, political and other elites in the Alpine snows of Davos, Switzerland, which runs Tuesday through Friday.

The first U.S. moon landing attempt in more than 50 years appeared to be doomed after a private company's spacecraft developed a "critical" fuel leak just hours after Monday's launch.

Pittsburgh-based Astrobotic Technology managed to orient its lander toward the sun so the solar panel could collect sunlight and charge its battery, as a special team assessed the status of what was termed "a failure in the propulsion system."

We lost Twitter and got X. We tried out Bluesky and Mastodon (well, some of us did). We fretted about AI bots and teen mental health. We cocooned in private chats and scrolled endlessly as we did in years past. For social media users, 2023 was a year of beginnings and endings, with some soul-searching in between.

Here's a look back at some of the biggest stories in social media in 2023 — and what to watch for next year:

Chinese consumer electronics giant Xiaomi unveiled its first electric car model on Thursday, with its boss declaring ambitions of becoming a global automotive powerhouse despite fierce competition at home.

She's an important figure behind today's artificial intelligence boom, but not all computer scientists thought Fei-Fei Li was on the right track when she came up with the idea for a giant visual database called ImageNet that took years to build.

We lost Twitter and got X. We tried out Bluesky and Mastodon (well, some of us did). We fretted about AI bots and teen mental health. We cocooned in private chats and scrolled endlessly as we did in years past. For social media users, 2023 was a year of beginnings and endings, with some soul-searching in between.

Here's a look back some of the biggest stories in social media in 2023 — and what to watch for next year:

A U.S. import ban on certain Apple smartwatch models came into effect Tuesday, after the Biden administration opted not to veto a ruling on patent infringements.

The United States International Trade Commission (ITC) decided in October to ban Apple Watch models over a patented technology for detecting blood-oxygen levels.

A quasi-independent review board is recommending that Facebook parent company Meta overturn two decisions it made this fall to remove posts "informing the world about human suffering on both sides" of the Israel-Hamas war.

In both cases, Meta ended up reinstating the posts — one showing Palestinian casualties and the other, an Israeli hostage — on its own, although it added warning screens to both due to violent content. This means the company isn't obligated to do anything about the board's decision.

European Union are looking into whether Elon Musk's online platform X breached tough new social media regulations in the first such investigation since the rules designed to make online content less toxic took effect.

"Today we open formal infringement proceedings against @X" under the Digital Services Act, European Commissioner Thierry Breton said in a post on the platform Monday.

European Union officials worked into the late hours last week hammering out an agreement on world-leading rules meant to govern the use of artificial intelligence in the 27-nation bloc.

The Artificial Intelligence Act is the latest set of regulations designed to govern technology in Europe destined to have global impact.