AMNA NAWAZ: We start the day's other headlines with a rare mass shooting in Sweden that killed about 10 people.

A gunman opened fire today at an education center for adults in the city of Orebro, which is about 125 miles West of Stockholm.

It prompted a massive emergency response.

Police say damage at the crime scene is so extensive that they couldn't give an exact death toll.

Sweden's prime minister called it a painful day for the whole country.

ULF KRISTERSSON, Prime Minister of Sweden (through translator): It is difficult to take in the magnitude of what has happened today.

We have seen a brutal deadly violence against completely innocent people.

This is the worst mass shooting in Swedish history.

AMNA NAWAZ: Authorities say the shooter is among the dead and they believe he acted alone.

Officials say they don't see any connection to terrorism at this point, but have not yet determined a motive.

Here in the U.S., authorities say they have recovered the remains of all 67 victims from last week's aircraft collision near Reagan National Airport.

All but one of the victims have been identified.

Today's update comes as salvage crews continue their efforts to recover wreckage from the waters of the Potomac River, including the jet's cockpit.

In the meantime, federal investigators say air traffic control data confirms the Army Black Hawk helicopter was flying at approximately 300 feet at the time of the collision.

Aviation rules require helicopters in the area to stay at or below 200 feet.

They hope to have a preliminary report within 30 days.

Maryland officials gave a first glimpse of the redesign of Baltimore's Francis Scott Key Bridge today, nearly a year after the original structure collapsed.

Artistic renderings of the new bridge show it to be taller and better protected against the type of ship strike that toppled its predecessor.

The project has a price tag of almost $2 billion and could be completed as soon as 2028.

The original Key Bridge collapsed last March when a massive container ship slammed into one of its supports.

Six construction workers were killed.

In Ukraine, the U.N.'s nuclear chief is warning that attacks on Ukraine's power grid could lead to a nuclear accident.

Rafael Grossi, who heads the International Atomic Energy Agency, met with Ukrainian President Volodymyr Zelenskyy in Kyiv today.

He also toured a heavily damaged power substation nearby.

While there, Grossi warned that Russian attacks on Ukraine's power supplies could threaten nuclear safety by potentially disrupting the cooling procedures needed at atomic facilities.

RAFAEL GROSSI, Director General, IAEA: The situation is quite dire.

Infrastructure has been degraded.

But I must say that I am impressed with the work, with the effort that is being put in order to ensure nuclear safety.

AMNA NAWAZ: Grossi's visit comes as a Russian missile strike left this city council building in Ukraine's northeastern Kharkiv region in tatters.

At least five civilians were killed and another 55 wounded.

On Wall Street today, stocks ended higher as concerns about President Trump's tariff plans eased a bit.

The Dow Jones industrial average gained more than 130 points, or about a third of 1 percent.

The Nasdaq jumped about 260 points on the day.

The S&P 500 climbed back above the 6000-point level.

And if you want an egg with your meal at Waffle House, it's going to cost you 50 cents more.

The restaurant chain says the surcharge is temporary, but necessary, as the nation's egg supplies are under threat.

That's because recent outbreaks of bird flu have led to fewer hens.

The Department of Agriculture says more than 13 million birds were lost or slaughtered from December into January.

Bird flu has infected at least 67 people since last year, and one person has died, though health officials say the chances of people catching it remain slim.

And 10 minutes, just 10 minutes, that is how long it took an asteroid to slice two Grand Canyons into the surface of the moon nearly four billion years ago.

An artistic rendering shows the moment the object slammed into the moon, sending giant rocks outward like missiles.

British and U.S. scientists used data from NASA's Lunar Reconnaissance Orbiter to determine that those rocks cut two Grand Canyons into the lunar surface comparable to the one in Arizona.

Their findings were published today in the journal "Nature Communications."

And the Aga Khan, who led the world's Ismaili Muslims, has passed away.

Considered by his followers to be a direct descendant of the Prophet Mohammed, the Harvard graduate grew into a business magnate and philanthropist.

He mixed with royals and used his riches to build homes, hospitals and schools in developing countries.

His foundation said that an announcement on a successor would come later.

The Aga Khan was 88 years old.

Still to come on the "News Hour": residents of a kibbutz that was attacked by Hamas begin the long rebuilding process; and the ACLU sues the Trump administration for restricting care for transgender minors.