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The Republican National Convention is in 4 days in Cleveland.

The Democratic National Convention is in 11 days in Philadelphia.

NASA has released the first picture of Jupiter taken since the Juno spacecraft went into orbit around the planet on July 4.

The picture was taken on July 10. Juno was 2.7 million miles from Jupiter at the time. The color image shows some of the atmospheric features of the planet, including the giant red spot. You can also see three of Jupiter's moons in the picture: Io, Europa and Ganymede.

The Senate is set to approve a bill intended to change the way police and health care workers treat people struggling with opioid addictions.

My husband and I once took great pleasure in preparing meals from scratch. We made pizza dough and sauce. We baked bread. We churned ice cream.

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"O Canada," the national anthem of our neighbors up north, comes in two official versions — English and French. They share a melody, but differ in meaning.

Let the record show: neither version of those lyrics contains the phrase "all lives matter."

But at the 2016 All-Star Game, the song got an unexpected edit.

At Petco Park in San Diego, one member of the Canadian singing group The Tenors — by himself, according to the other members of the group — revised the anthem.

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Police in Baton Rouge say they have arrested three people who stole guns with the goal of killing police officers. They are still looking for a fourth suspect in the alleged plot, NPR's Greg Allen reports.

"Police say the thefts were at a Baton Rouge pawn shop early Saturday morning," Greg says. "One person was arrested at the scene. Since then, two others have been arrested and six of the eight stolen handguns have been recovered. Police are still looking for one other man."

A 13-year-old boy is among those arrested, Greg says.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

After an international tribunal invalidated Beijing's claims to the South China Sea, Chinese authorities have declared in no uncertain terms that they will be ignoring the ruling.

The Philippines brought the case to the Permanent Court of Arbitration in The Hague, objecting to China's claims to maritime rights in the disputed waters. The tribunal agreed that China had no legal authority to claim the waters and was infringing on the sovereign rights of the Philippines.

Donald Trump is firing back at Supreme Court Justice Ruth Bader Ginsburg after she disparaged him in several media interviews. He tweeted late Tuesday that she "has embarrassed all" with her "very dumb political statements" about the candidate. Trump ended his tweet with "Her mind is shot - resign!":

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What Drove Early Man Across Globe? Climate Change

Sep 17, 2012
Originally published on September 17, 2012 6:39 pm

Anthropologists believe early humans evolved in Africa and then moved out from there in successive waves. However, what drove their migrations has been a matter of conjecture.

One new explanation is climate change.

Anthropologist Anders Erikkson of Cambridge University in England says the first few hardy humans who left Africa might've gone earlier but couldn't. Northeastern Africa — the only route to Asia and beyond — was literally a no man's land.

"The people couldn't really couldn't leave," he says. "The climate was too arid and too hot, so humans were bottled up."

Eventually they got out of the bottle — we know that from the trail of fossil bones and stone tools they left behind. And recently, scientists have learned to read genetic mutations in current populations to track where our ancestors went for the past 70,000 years or so.

To this, the Cambridge scientists have now added climate change.

Climate change leaves a trail in sediments, buried pollen, coral, even dust. The scientists compared that record with the record of human migration gleaned from genetics and fossils.

Writing in the Proceedings of the National Academy of Sciences, the Cambridge team says changes in climate coincided with some of the big migrations — through Asia, then north to Europe and eventually all the way to Australia and North America.

One thing climate controlled was food. Andrea Manica from the Cambridge team says, "The main thing that really drives a lot of the migrations is actually temperature and precipitation to provide food — how much green matter did you have available in each location?" Green matter to eat, or to provide food for animals they could hunt.

Manica says populations also stayed put in certain places because there were barriers like high sea levels or glaciers that blocked their progress. "So you had a buildup of a pretty good stable population, until eventually, that barrier got removed," Manica explains — that is, until sea levels dropped or glaciers melted.

Manica says that happened in south Asia, which was a sort of "hub" for thousands of years until dropping sea levels opened up new migration routes. Same with Siberia, thousands of years later, when glaciers melted and allowed people to cross the land bridge across the Bering Sea.

Anthropologists who've reviewed this new analysis say it will give them a much better road map of how humans populated the planet than just following the fossilized bones.

Copyright 2012 National Public Radio. To see more, visit http://www.npr.org/.

Transcript

AUDIE CORNISH, HOST:

From NPR News, this is ALL THINGS CONSIDERED. I'm Audie Cornish.

Anthropologists believe early humans evolved in Africa, then moved out from there in successive migrations. But what got them up and going is a matter of conjecture. One explanation is that changing climate dictated when and where our ancestors went.

NPR's Christopher Joyce reports on new research that supports that idea.

CHRISTOPHER JOYCE, BYLINE: Anthropologist Anders Erikkson, of Cambridge University in England, says the first few hardy humans who left Africa might have gone earlier but couldn't. Northeastern Africa, the only route to Asia and beyond, was literally a no-man's land.

ANDERS ERIKKSON: The people couldn't really leave because the climate was too arid and too hot, so humans were bottled up.

JOYCE: Eventually they got out of the bottle; we know that from the trail of fossil bones and stone tools they left behind. And recently, scientists have learned to read genetic mutations in current populations to track where our ancestors went for the past 70,000 years or so. To this, the Cambridge scientists have now added something new: climate change.

Climate change leaves a trail in sediments, buried pollen, coral, even dust. The scientists compared that record with the record of human migration gleaned from genetics and fossils. Writing in the proceedings of the National Academy of Sciences, the Cambridge team says changes in climate coincided with some of the big migrations through Asia, and north to Europe, and eventually all the way to Australia and North America.

One thing climate controlled was food. Here's Andrea Manica from the Cambridge team.

ANDREA MANICA: The main thing that really drives a lot of the migrations is actually temperature and precipitation to provide food. How much green matter did you have available in each location?

JOYCE: Manica says populations sometimes stayed because there were barriers, like high sea levels or glaciers, that kept them from migrating.

MANICA: And so, you had a buildup of a pretty good stable population until eventually that barrier got removed.

JOYCE: The seas dropped or glaciers melted. Manica says that happened in South Asia, which was a sort of population hub for thousands of years, as dropping sea levels opened up new migration routes; same with Siberia, thousands of years later.

Anthropologists who've reviewed this new analysis say it will give them a much better road map of how humans populated the planet than just following the fossilized bones.

Christopher Joyce, NPR News. Transcript provided by NPR, Copyright National Public Radio.