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Mateo Solares came to Argentina from Bolivia a few years ago. The 25-year-old was born, and grew up as, Moyra Veronica. Biologically female, Solares says he always felt like a guy.

The main reason Solares moved to Argentina is because it seemed like an easier place to transition into a life as a young man. He says having an ID card that reflects how he sees himself is huge.

Let's say you're pushing 115 mph on the highway, racing neck and neck with a Chevy Camaro — in an online video game, of course.

Right as you're pulling into the lead, you notice a billboard pop up on your TV screen. Early voting has begun? Voteforchange.com? Whoa, keep your eyes on the road!

This is Need for Speed: Carbon, one of 18 games that the Obama campaign advertised in during the 2008 campaign. This year, President Obama is back at it, running ads in Madden NFL 13, on the free online game site Pogo.com, and in mobile games like Tetris.

Here's something President Obama and Mitt Romney agree on: America's tax system is too complicated. Both men have outlined changes that are broadly similar, but with some important differences.

The Problem:

Today's tax code is like a department store, where the price tags are high, but there are lots of coupons, sales and weekend specials. That creates some inequities. Just as shoppers can pay different prices depending on which day they buy, taxpayers with the same income can pay very different rates depending on which deductions they qualify for.

The cloud's vast computing power is making it easier and less expensive for companies and clinicians to discover new drugs and medical treatments. Analyzing data that used to take years and tens of millions of dollars can now be done for a fraction of that amount.

Most of us know Amazon as the world's largest online retailer. But its cloud computing business is booming too.

The judging process for Round 9 of Three-Minute Fiction is now under way. NPR's Bob Mondello reads an excerpt from one standout story, The Interview, written by Georgia Mierswa. You can read the story in its entirety below, and read more stories at www.npr.org/threeminutefiction.

Online education isn't particularly new. It has been around in some form since the 1990s, but what is new is the speed and scale in which online learning is growing.

In barely a year, many of the most prestigious research universities in the world – including Stanford, Caltech, Oxford and Princeton — have started to jump onto the online bandwagon.