Geoff Brumfiel

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MARY LOUISE KELLY, HOST:

This year, deep inside a mountain, North Korea detonated a giant nuclear bomb.

The intercontinental ballistic missile that North Korea launched on Wednesday appears to be significantly larger and more powerful than previous versions, according to independent analysts.

North Korea says a new intercontinental ballistic missile tested on Wednesday proves it has a nuclear deterrent that can reach any target in the United States.

According to a statement from the Korean Central News Agency, the ICBM is capable of carrying a "super-large heavy warhead, which is capable of striking the whole mainland of the U.S."

The tiny nation of Denmark has just three stations for monitoring atmospheric radiation. Each week, scientists change out air filters in the detectors and take the used ones to a technical university near Copenhagen.

There, Sven Poul Nielsen and other researchers analyze the filters. They often snag small amounts of naturally occurring radioactivity, radon for example.

European authorities are providing new details about a cloud of mysterious radioactive material that appeared over the continent last month.

Monitors in Italy were among first to detect the radioactive isotope ruthenium-106 on Oct. 3, according to a fresh report by France's Radioprotection and Nuclear Safety Institute, known as IRSN. In total, 28 European countries saw the radioactive cloud, the report says.

The speed and ferocity of the wildfires raging through Northern California's wine country have caught many residents off guard and left state officials scrambling to contain the flames.

But for fire researchers, these devastating blazes are part of a much larger pattern unfolding across the Western United States. So far this year, fires in the U.S. have consumed more than 8.5 million acres — an area bigger than the state of Maryland.

A final report on Malaysia Airlines Flight 370 says the fate of the vanished aircraft may never be known, despite years of searching and more than $150 million in costs.

The report, which includes hundreds of pages of technical appendices, contains new details about the search. Perhaps most significantly, it provided more detail about a crew member's flight simulator that contained a route similar to the one investigators think the missing plane took.

The blast was picked up by seismic stations all over the world, and it was big.

The rain just won't stop. More than two days after Hurricane Harvey made landfall on the Texas coast, the downgraded storm continues to dump water across the region.

So much rain has fallen in the Houston area that the National Weather Service has had to revamp its charts.

Climate researchers agree that climate change can be partially to blame for the devastation. Here's how it has (and hasn't) shaped the course of the storm.

Eclipses are among the most predictable events on the planet. This one was known about for many decades before it crossed the U.S. earlier Monday.

Accordingly, people had been planning eclipse road trips for weeks in advance. They piled into planes and cars and made their way to the 70-mile-wide swath of land where the total eclipse would be visible. They checked online calculators, which told them the time of totality down to the second.

This week saw a dramatic escalation of tensions on the Korean Peninsula. As North Korea promised to engulf the U.S. territory of Guam in "enveloping fire", President Trump tweeted that the U.S. military is "locked and loaded" should North Korea "act unwisely".

The North's missile and nuclear programs have been shrouded in secrecy for years, but recent tests have shed more light on their capabilities. Here is what's currently known.

North Korean missiles can reach the continental United States.

Later this month, the moon's shadow will fall on Carhenge.

"Holy cow man, guess what? There's going to be an eclipse," says Kevin Howard, the head of the visitor's bureau for Alliance, Neb., which is home to the Stonehenge replica made of cars.

Editor's note, Aug. 10: An earlier version of this story said the draft climate report had been leaked by The New York Times, which has since updated its coverage to reflect that a version of the report was made available by the nonprofit Internet Archive in January.


A draft government report on climate says the U.S. is already experiencing the consequences of global warming. The findings sharply contrast with statements by President Trump and some members of his Cabinet, who have sought to downplay the changing climate.

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