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Elon Musk sues disinformation researchers, claiming they are driving away advertisers

X, the company formerly known as Twitter, is suing the Center for Countering Digital Hate, which has documented the spread of hate speech and viral falsehoods on social media.

The Mastodon app homepage is seen displayed on a mobile phone screen.

Some Twitter users flying the coop hope Mastodon will be a safe landing

Now that Elon Musk owns Twitter, some of the social network's users are looking for alternatives. One that's ballooned in the past two weeks is Mastodon.

UC San Diego students carried signs and made speeches at the Walkout for Climate rally Wednesday next to the Geisel Library. April 19, 2020.

UC San Diego students rally against global warming as chancellor presents an ambitious goal

Students activists stage a "Walkout for Climate" rally and cheer Chancellor Khosla’s desire to eliminate fossil-fuel power on campus by 2030.

The number of overdoses that involve both fentanyl and stimulants like cocaine and meth is growing fast. One way people who use drugs can protect themselves is by using test strips to check for the presence of fentanyl in other drugs.

Fentanyl mixed with cocaine or meth is driving the '4th wave' of the overdose crisis

A new study finds a 50-fold growth in deaths from combined use of stimulants and opioids. The toxic and contaminated drug supply is to blame.

As oceans get hotter, scientists are looking for ways to safeguard coral species so they can be used to restore reefs in the future.

One way to save coral reefs? Deep freeze them for the future

As oceans get hotter, coral reefs are suffering. Scientists are working on ways to preserve coral by freezing and then reviving them to restore reefs someday.

Russian President Vladimir Putin, left, and North Korea's leader Kim Jong Un shake hands during their meeting at the Vostochny cosmodrome outside the city of Tsiolkovsky, about 200 kilometers (125 miles) from the city of Blagoveshchensk in the far eastern Amur region, Russia, on Wednesday, Sept. 13, 2023.

North Korea's Kim vows full support for Russia's 'sacred fight' after meeting Putin

The leaders met at Russia's Vostochny Cosmodrome for a summit that underscores how their interests are aligning in the face of their countries' separate, intensifying confrontations with the U.S.

In a new social media trend, some people on X, formerly known as Twitter, have superimposed their own faces onto former President Donald Trump's mug shot.

Mug shots are usually harmful. For Trump and his supporters, it's a badge of honor

Typically, mug shots are associated with shame. But for former President Donald Trump and some of his supporters, his mug shot — the first ever of an American president — was something they embraced.

Descent: Legends of the Dark - The Betrayer's War, Disney Lorcana: Rise of the Floodborn, Ticket to Ride Legacy: Legends of the West

'Disney Lorcana: Rise of the Floodborn' and more new board games, reviewed

Disney's trading card game expansion has keen art and underbaked mechanics, while Descent: The Betrayer's War and Ticket to Ride Legacy offer huge campaigns for invested gamers.

Chloe Lauer shows an electric bike she rides. She is the executive director of the San Diego County Bicycle Coalition. Sept 5, 2023

ER doctors question the safety of electric bikes and scooters

Two-wheeled electric vehicles offer great speed and ease of use and could be a sword in the fight against greenhouse emissions. But health officials in San Diego question whether they are safe to use.

Siblings Sofia Oliveira, 18, and Andre Oliveira, 15, pose for a picture at the beach in Costa da Caparica, south of Lisbon, Wednesday, Sept. 20, 2023.

Young climate activists challenging 32 governments will get their day in court

Six young activists are due Wednesday at the European Court of Human Rights, where they're accusing 32 governments of violating their human rights for failing to adequately address climate change.

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