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"From an algorithms perspective, this is a great time to be alive. Algorithms are just frolicking in the mountains of data that they can play with."

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The U.N. estimates that the world's population will pass the 7 billion mark on Monday.

Much of that growth has happened in Asia — in India and China. Those two countries have been among the world's most populous for centuries. But a demographic shift is taking place as the countries have modernized and lowered their fertility rates. Now, the biggest growth is taking place in sub-Saharan Africa.

population billion npr

We've all heard the theory that some students are visual learners, while others are auditory learners. And still other kids learn best when lessons involve movement.

But should teachers target instruction based on perceptions of students' strengths? Several psychologists say education could use some "evidence-based" teaching techniques, not unlike the way doctors try to use "evidence-based medicine."

Learner think scientists shots health blog npr

Whether you're on Twitter or are just interested in checking out relevant users, there are a number of Twitter accounts that have served as riveting play-by-plays of today's protests.

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After listening to the nearly 50 songs on The Witmark Demos 1962-1964, it slayed me to think that Bob Dylan wrote and recorded these songs before he was even 24. It's one thing to write "A Hard Rain's A-Gonna Fall" or "Blowin' in the Wind" by that age, but add "Ballad of Hollis Brown," "Talkin' John Birch Paranoid Blues," "Boots of Spanish Leather," "Mr. Tambourine Man" and other bits of genius to the list, and it really hits hard what a phenomenal talent Dylan was at such a young age.

npr dylan listen

As computers and automated systems increasingly take the jobs humans once held, entire professions are now extinct. Click through the gallery below to see examples of endangered professions, from milkman to telegrapher, and hear from people who once filled those oft-forgotten jobs.

history social_studies technology jobs yesteryearjobs occupations obsolete npr

"Planet Money is a multimedia team covering the global economy."

Money npr blog economy News Economics finance media

Making science user friendly for the masses

Science podcast radio news education audio technology podcasts npr