Good evening. I'm William Brangham. Amna Nawaz and Jeff Bennett are away. On the news hour tonight, Director of National Intelligence Tulsi Gabbard resigns, the latest high-profile shake-up in the Trump administration. We look at the many causes driving a decade-long decline in students' math and reading scores.

The pandemic was just the mudslide that followed seven years of steady erosion in student achievement.

And so-called carbon credits meant to offset climate change often haven't lived up to their promise,

how some groups are now trying to change that.

We want to make sure that we're not just paying land on those four things they would have already done,

because if that's the case, then you don't actually get additional carbon.

The atmosphere doesn't feel a difference.

No. carbon. The atmosphere doesn't feel a difference. Welcome to the News Hour. Director of National Intelligence, Tulsi Gabbard, the highest

ranking intelligence official in the U.S.

government, resigned today. She said her husband is suffering from a rare bone cancer that requires

her full attention. Foreign and defense correspondent Nick Schifrin and White House correspondent

Liz Landers are both covering this story and they join us now. Nick, what did Gabbard say in her

resignation announcement today? Well, as you said, William, Gabbard said that she's leaving

because of her husband's illness and she released this resignation letter, which reads in part,

My husband Abraham has recently been diagnosed with an extremely rare form of bone cancer.

I must step away from public service to be by his side and fully support him through this

battle.

In response, President Trump wrote that, quote, Tulsi has done an incredible job and we will miss

her.

And the president announced that her principal deputy, Aaron Lucas, would become the acting

director of national intelligence.

So the president using kind words there, William, and Tulsi Gabbard has executed some of his

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