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Catch up on key developments and the latest in-depth coverage of Russia's invasion of Ukraine.

Incumbent Emmanuel Macron got the most votes in the first-round of France's presidential election, but the runoff battle with his far-right challenger looks set to be a hard fight.

Arecibo has been a vital resource for radio astronomy, astrophysics, atmospheric studies and solar system astronomy. Now, it's set to close due to structural damage.

And in Mariupol, women, children and elderly civilians have been evacuated from the steel mill. Officials continue to work on humanitarian corridors for the rest of the city.

The president's son, who announced his diagnosis on Instagram, said he has no symptoms and feels fine. Trump Jr. said he plans to quarantine and "take it seriously."

U.S. support to the coalition over the course of the war has included inflight refueling of Saudi warplanes and the sale of precision bombs dropped on Yemeni targets.

America's oldest trees store vast amounts of carbon. Counting them is the first step to preserving them, says the Biden administration.

Pakistan hoped the Taliban's seizure of Afghanistan would secure its western border. Now, it is accusing the Taliban of allowing militants to conduct cross-border attacks.

Income-driven repayment plans were intended to help low-income student loan borrowers, and eventually cancel their debt. New documents paint a breathtaking picture of the program's failure.

The new coronavirus has spurred biotech labs in universities and companies to try to find new approaches to stopping the virus — from blocking its key enzymes to interfering with its genetics.