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Twitter CEO Elon Musk speaks at the "Twitter 2.0: From Conversations to Partnerships," marketing conference in Miami Beach, Florida, in April.

Elon Musk threatens to reassign @NPR on Twitter to 'another company'

Musk, who has been scuffling with the media since acquiring the platform last year, asked if NPR was going to start tweeting again.

Chinese Defense Minister Li Shangfu salutes before delivering his speech on the last day of the 20th International Institute for Strategic Studies (IISS) Shangri-La Dialogue, Asia's annual defense and security forum, in Singapore, Sunday, June 4, 2023.

China and U.S. defense chiefs compete for influence in the Asia Pacific

China's new defense minister made his first international appearance on Sunday at an annual defense summit, where he delivered a speech full of thinly veiled digs at the U.S.

Part of Molly Sampson's shark tooth collection – including the tooth of a megalodon from some 15 million years ago (left) – sits on display on Jan. 11. Her collection contains over 400 teeth.

Maryland girl finds ancient tooth from a 50-foot-long megalodon in the Chesapeake Bay

Budding paleontologist Molly Sampson found the 5-inch megalodon tooth near Calvert Cliffs, Md., while trying out the new insulated waders she got for Christmas.

Workers at a coal mine in Ukraine start their shifts. Russia's invasion of Ukraine disrupted global supplies of fossil fuels and led to more reliance on coal for electricity in some countries.

Here's what happened on Day 5 of the U.N.'s COP27 climate talks

Russia's war in Ukraine also threatens to wreck climate goals, members of Congress arrive, and an actor changes his name to draw attention to global warming

Electric cars charge at a hub in downtown Milan on March 23. Starting in 2035, all cars sold in the European Union will be zero-emission vehicles.

All new cars in the EU will be zero-emission by 2035. Here's where the U.S. stands

European Union states agreed to a plan after adding an exemption for cars that run on e-fuels. In the U.S., efforts to phase out gas-powered cars include future bans in several states.

To reignite the joy of childhood, learn to live on 'toddler time'

The days might seem long, but the years go by quickly, friends warned when my son was born. I wanted to savor each precious memory, but how? Living on "toddler time," showed me the way.

In December, the Taliban banned female students from attending university. Some of them are turning to online options. Above: Afghan female students attend Kabul University in 2010.

The Taliban ended college for women. Here's how Afghan women are defying the ban

The December ban on college education for women has led some to turn to online options. But that comes with its own set of problems.

Aaron Elkins, director of the James Silberrad Brown Center for Artificial Intelligence at San Diego State, shows a robot that is used to interview people who want to cross international borders. March 28, 2023

SDSU has a new home for research into artificial intelligence

There will be a place for developing AI that uses sensors and cameras to analyze data that’s collected in the environment, not on the internet.

Chris Gloninger, pictured in June 2022. Next month he makes a career pivot from TV meteorologist to climate consultant.

A meteorologist got threats for his climate coverage. His new job is about solutions

Chris Gloninger, a TV news meteorologist in Iowa, got harrassing emails and a death threat over his coverage of climate change. Now he's leaving the industry to tackle climate change head-on.

Tucker Carlson speaks at a political event on August 7, 2021 in Esztergom, Hungary. Carlson, who was fired from Fox News last month, announced he is taking his show to Twitter.

Tucker Carlson says he'll take his show to Twitter

The fired Fox News host announced he is bringing his show to Twitter, owned by Elon Musk, "soon." His lawyers reportedly have sent threatening letters to Fox to let him out of his contract.

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