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Here’s what you need to know at the end of the day.

On the second day of his visit to South Korea, President Trump tried to make a surprise visit to the demilitarized zone, but dense fog forced his helicopter to turn back.

Mr. Gordon undertook a harrowing spacewalk in 1966 and orbited the moon in 1969, but he never achieved his dream of walking on the lunar surface.

A still-evolving bill will clear committee on Thursday and hit the House floor for a vote the week after.

The president’s bluster is obscuring a real opportunity for diplomacy — and a chance to avert a catastrophe.

A plane carrying Halladay, a former pitcher, went down in the Gulf of Mexico. A two-time Cy Young Award winner, Halladay retired in 2013 after a 16-year career.

As the United Nations convenes a climate conference in Bonn, leaders might consider whether phasing out nuclear energy is doing more harm than good.

The social media service is doubling its character limit for almost all users, a major change that it hopes will spur more activity across Twitter.

The Alphabet unit says it expects to allow passengers to ride in truly driverless cars in its tests within the next few months.

Here’s what you need to know to start your day.

Promising “a new day for Medicaid,” Seema Verma, President Trump’s top health care official, called on states to move Medicaid in a conservative direction.

You glitter the way she does only if there’s gold at the core.

The latest financial results for the messaging and media company Snap included higher costs and a net loss more than triple that of a year ago.

Precious Colón entered the shelter system after her mother found out she was pregnant. She plans to return to college in hopes of becoming a businesswoman and a lawyer.

An opulent hotel in Riyadh, the Saudi capital, is being used to house people detained in what Saudi Arabia’s government calls a crackdown on corruption.

The former adviser offered new details during eight hours of testimony before the House Intelligence Committee, which has released a transcript of his remarks.

China is gleaning know-how from foreign firms, willing or otherwise, to build the industries of the future, in an effort that worries companies and Washington.

Mr. Hallberg, the American Ballet Theater principal and paragon of classical style, has a new memoir about life, dancing and returning from an injury.

Drinking alcohol, even modest amounts, increases the risk of breast cancer and other cancers.

Tales of sailing the high seas, rescuing a whale and emulating Robinson Crusoe from Mordecai Gerstein, Peter Sis, the Fan brothers and more.