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The world's glaciers hold lots of nuclear fallout. Here's what might happen when they melt.

New research finds high levels of radioactive particles frozen in the ice.

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Thousands of identities, personal information published in FBI-related hack

The materials include names, jobs and email addresses of more than 23,000 people, more than 1,000 of them attached to FBI and other law enforcement domains.

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The Lyrid meteor shower is back. Here's how to see April's shooting stars.

A full moon could wash out this year's show, but skywatchers could still spot up to 20 meteors an hour.

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For 'Game of Thrones' superfans and devoted conspiracy theorists: Similar psychology, different outcomes.

The psychology of groups and the internet's propensity to amplify outlandish content has created the kind of feedback loops in which bizarre theories flourish.

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Hypersonic air travel just took a step closer to reality

New engine-cooling technology could help planes reach speeds in excess of 3,800 miles per hour.

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Black hole picture could unlock new era in astronomy

Experts predict an avalanche of new discoveries about space.

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Foreign governments are fed up with social media — and threatening prison for tech employees

While public outcry has provided the backdrop for increased government oversight, free-speech advocates are warning of heavy-handed censorship.

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SpaceX's Falcon Heavy rocket launches on first commercial flight

The massive booster is carrying a Saudi telecommunications satellite into orbit.

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One of the world's largest advertisers is calling for tech companies to do better

"We need to begin charting the course in a different way going forward," Marc Pritchard, the chief brand officer of P&G, said Thursday.

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For long-shot Democratic candidate, a delicate dance with internet extremists

In one chat room, moderators that run the chat have had to post rules like "no slurs, no racism." Other users discussed whether to allow anti-Semitic comments.

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How to watch Israeli spacecraft attempt moon landing

The craft performed a final pre-landing maneuver Wednesday, bringing it within 10 miles of the lunar surface.

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A 3-year-old locked dad out of his iPad for 48 years

Probably should've just given the kid the password.

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New bill aims to stamp out bias in algorithms used by companies

Democratic lawmakers introduced legislation to bring federal oversight to use of "automated decision systems."

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Facebook's battle against disinformation adds a new weapon — the 'click gap'

The new "click-gap" signal will down-rank links to purported news articles that are receiving large amounts of traffic from Facebook but aren't linked to other parts of the web.

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Amazon employees push for company to 'be a climate leader' to combat global warming

"Amazon has the resources and scale to spark the world's imagination and redefine what is possible and necessary to address the climate crisis," said a letter from thousands of employees.

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House passes net neutrality bill — but it won't have a chance in the Senate

Net neutrality proponents have won their most significant political victory yet, but any celebration will be short-lived.

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First-ever black hole photo gives humanity a long-anticipated glimpse of bizarre celestial object

"This one is so precious, so beautiful, because it is real."

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Israeli space probe prepares for historic moon landing

The spacecraft is expected to settle on the lunar nearside.

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White nationalism hearing hit by wave of hate speech on YouTube

The hearing comes as the role of technology companies in the hosting and spread of hate speech has come under renewed scrutiny after a gunman killed 50 people at two mosques in New Zealand.

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SpaceX's Falcon Heavy rocket set for first commercial launch. Here's how to watch it live online.

The 230-foot-tall rocket is the world's most powerful.