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NASA space telescope spots a double star system with an alter ego

It's like a cosmic story of Dr. Jekyll and Mr. Hyde.

USA

Colombia was the deadliest place on Earth for environmental activists. It's gotten worse.

More than 40 human rights defenders and community leaders have been killed in Colombia since January, according to Indepaz, a Colombian peace-building nonprofit.

USA

Skiing is in Norway's blood — but maybe not its future

"I have skied this area my whole life, but for the past three years I haven't even had skis on my feet," one Norwegian woman said.

USA

Tiny songbirds, big consequences: Why ornithologists see climate change looming everywhere

Within the field of ornithology, it is becoming difficult not to see echoes of climate change across the spectrum of research.

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Bloomberg is spending big on Google — and it's 'persuasive'

Bloomberg has spent more than $41 million on Google and YouTube ads since he entered the race late in November, according to data analyzed by NBC News.

USA

Apple granted restraining order against alleged 'aggressive' stalker

The man is accused of harassing CEO Tim Cook and other company executives, court documents say.

USA

DOD communications hub reports likely data breach

Many servicemembers received a letter saying that their personal information The branch of the U.S. military that oversees information technology and communications has suffered a potential breach of servicemembers' personal information,

USA

Twitter is testing new ways to fight misinformation — including a community-based points system

A leaked demo features bright red and orange badges for tweets that have been deemed "harmfully misleading."

USA

Scientists eye the Martian underground in search for alien life

The subsurface of the Red Planet offers a protected, and possibly habitable, environment.

USA

Two giant icebergs broke off Antarctica. Here's what that means for the continent's health.

Antarctica's Pine Island Glacier is one of the most closely watched pieces of ice on Earth. And scientists are warning about signs of climate change.

USA

What is the 'boogaloo?' How online calls for a violent uprising are hitting the mainstream

The movement says it wants a second Civil War targeting liberal political opponents and law enforcement.

USA

Earth's coral reefs could be gone by 2100, research finds

The bleak outlook forecasts that warming oceans and rising seas could have a devastating impact on ocean ecosystems.

USA

Kickstarter workers vote to form first union in tech industry

The historic vote comes amid growing discontent among employees at technology companies such as Google, Amazon and Microsoft, who have started to organize.

USA

Fast-and-loose culture of esports is upending once staid world of chess

Grandmasters and upstarts are reinventing the game online, becoming its most visible ambassadors and arguably its first entertainers.

World News

Zuckerberg tells Europe: regulate social media or China will set rules

Facebook's Mark Zuckerberg wants Europe to regulate social media on political advertising and privacy — or risk losing ground to “authoritarian” rules from China.

USA

Cute videos, but little evidence: Police say Amazon Ring isn't much of a crime fighter

Hundreds of police departments have signed agreements with Ring to gain access to footage filmed on home surveillance cameras

USA

A museum's narwhal tusk disappeared in the 1980s. The FBI wants your help to find it.

In the late 1800s, famed explorer Robert Edwin Peary returned from an Arctic excursion with a unique souvenir: the long, sword-like tusk of a narwhal. Then it went missing.

USA

U.S. officials: Using Huawei tech opens door to Chinese spying, censorship

The closest U.S. ally, Britain, disagrees with U.S. warnings that any use of Huawei technology exposes a country to digital espionage.

USA

Earth just had its hottest January in recorded history

The record highlights a worrisome trend as the planet continues to warm at an accelerated pace.

World News

Meet the material of the future that's 200 times stronger than steel

Now there's a free manual on how to make the material of the future.