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USA

Massive oil refinery leaks toxic chemical in the middle of Philadelphia

Philadelphia Energy Solutions is just one of a dozen refineries across the U.S. that have consistently exceeded the EPA's "action level" for benzene.

USA

A '#NeverWarren' hashtag portended a Democratic squabble. Data showed otherwise.

The hashtag was used by many well-followed accounts that sought to downplay any division between Sanders and Warren, in turn boosting the trend.

USA

Scientists find Australian wildfire smoke has circled the globe

A satellite traced the movement of the smoke and produced an image Monday showing areas in Australia where the smoke had reached its place of origin.

USA

The last decade was the warmest ever recorded, NASA and NOAA find

The data is a closely watched indicator of the Earth's changing climate, particularly as projections for future years anticipate the trend to continue.

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USA

Giant tortoise who helped save species retires in Galapagos Islands

Diego, a giant tortoise native to the Galapagos Islands, is retiring from a captive breeding program that helped increase his species' population on Española Island.

USA

'Fire clouds': After Australia, scientists warn the erratic weather phenomenon could become a new reality

Pyrocumulonimbus clouds, or pyroCbs, can generate thunder, lightning and tornado-force winds, in addition to belching out burning embers.

USA

Experts warn Grindr, other dating apps may pose national security risk

NBC News analyzed four popular dating apps, including Tinder and Hinge, finding each collect a range of personal information.

USA

From offense to defense: NSA's Microsoft flaw alert shows shift in public strategy

The decision to alert Microsoft — and to hold a press call with reporters about it — is a departure from the way the NSA operated just a couple years ago.

Europe News

Tech giants are serious about lobbying in Brussels

Data protection, copy right, and digital tax. As the EU tries to regulate internet sectors big American companies boost their lobbying in the European capital

USA

Cookies track you across the internet. Google wants to phase them out.

The move is meant to offer users greater control over their digital footprints and enhance user privacy, but critics worry it further entrenches Google's dominance.

USA

Buried in a meteorite, 7 billion-year-old stardust is oldest material found on Earth

Some of the ancient grains are billions of years older than our sun.

USA

From infotainment to helicopter cabs, the auto industry is flying high at Consumer Electronics Show

Before you even step inside, one "smart" car will set your seat to the right position, turn on your favorite tunes, and program the GPS for your next destination.

USA

CES 2020: The big takeaways from tech's weirdest trade show

We may not have our own flying cars — yet — but at least we can talk to our faucets.

USA

NASA graduates new class of astronauts for missions to the moon, Mars

The newly minted astronauts are the first to receive their pins under the space agency's Artemis program.

USA

Game on: Dems prepare to counter Trump on Facebook

While many Democratic politicians and academics are hammering Facebook for its ad policies, smaller liberal groups are breathing a sigh of relief.

USA

Voting machine makers face questions from House lawmakers — but more remain

The CEOs of the three companies that make more than 80 percent of the country's voting machines testified before Congress Thursday for the first time.

USA

800,000 years ago, a meteor slammed into Earth. Scientists just found the crater.

Scientists knew the impact happened; they just didn't know where.

USA

Microsoft launches tool to identify child sexual predators in online chat rooms

The tool, codenamed Project Artemis, is designed to look for patterns of communication used by predators to target children

USA

Australia's wildfire crisis faces a new foe: Misinformation

Wildfire researchers say it's unreasonable to think the actions of two dozen possible offenders could have caused the widespread fires.

USA

Facebook's final word on political ads: No changes to microtargeting but more control for users

Facebook will expand transparency around political ads and give its users more control over the ads they see.