A few days before Thanksgiving, George Hotz, a 26-year-old hacker, invites me to his house in San Francisco to check out a project he's been working on. He says it's a self-driving car that he had built in about a month. But when I turn up that morning, in his garage there's a white 2016 Acura ILX outfitted with a laser-based radar (lidar) system on the roof and a camera mounted near the rearview mirror. A tangle of electronics is attached to a wooden board where the glove compartment used to be, a joystick protrudes where you'd usually find a gearshift, and a 21.5-inch screen is attached to the center of the dash. "Tesla only has a 17-inch screen," Hotz says. He's been keeping the project to himself and is dying to show it off. Hotz fires up the vehicle's computer, which runs a version of the Linux operating system, and strings of numbers fill the screen. When he turns the wheel or puts the blinker on, a few numbers change, demonstrating that he's tapped into the Acura's internal controls. After about 20 minutes of this, and sensing my skepticism, Hotz decides there's really only one way to show what his creation can do. "Screw it," he says, turning on the engine. As a scrawny 17-year-old known online as "geohot," Hotz was the first person to hack Apple's iPhone, allowing anyone--well, anyone with a soldering iron and some software smarts--to use the phone on networks other than AT&T's.

Drone delivery might be years away in the U.S., but it's becoming a reality in Rwanda this summer. A San Francisco-based drone delivery company says it'll start making its first deliveries of blood and medicine in Rwanda in July. Zipline International Inc., backed by tech heavyweights like Sequoia Capital and Google Ventures, demonstrated its technology for journalists last week in an open field in the San Francisco Bay area. In a demo broadcast on Periscope on Friday, a staffer launched a fixed-wing plane weighing just 22 pounds off a launcher that used compressed air. Electric-powered propellers took it the rest of the way, on a flight that could extend to 75 miles round trip, using military-grade GPS and software to navigate. As it dipped low before the drop-off area, the bottom popped open, and a cardboard box with a parachute made of butcher paper and biodegradable tape burst out, plopping to the ground a few steps away from CEO Keller Rinaudo, who walked over to retrieve it.

Drone delivery might be years away in the U.S., but it's becoming a reality in Rwanda this summer. A San Francisco-based drone delivery company says it'll start making its first deliveries of blood and medicine in Rwanda in July. Zipline International Inc., backed by tech heavyweights like Sequoia Capital and Google Ventures, demonstrated its technology for journalists last week in an open field in the San Francisco Bay area. In a demo broadcast on Periscope on Friday, a staffer launched a fixed-wing plane weighing just 22 pounds off a launcher that used compressed air. Electric-powered propellers took it the rest of the way, on a flight that could extend to 75 miles round trip, using military-grade GPS and software to navigate.

The vultures of Britain's International Centre for Birds of Prey don't know it, but they're dupes. Every day, the giant birds carefully tend to their eggs, rotating them periodically so they incubate just right. But…take a closer look at that nest. Not every egg in there is made of calcium carbonate, and they don't always contain baby birds. No, at this conservation center, some of those eggs are actually 3-D printed.

It's been fascinating to watch the storm over Microsoft's AI Twitter chat bot, Tay, which learned extreme racism, homophobia, and drug culture from internet trolls and was hastily taken offline. As one commentator put, it went from saying "humans are super cool", to extolling Nazi values in less than 24 hours – a useful analog of extremism's connection with ignorance in a meme-propelled culture. But were trolls solely to blame? As journalist Paul Mason noted in his Guardian blog, Tay was essentially feeding off the deep undercurrents of prejudice and hate speech that lurk near the surface of many social platforms. Or at least they do in the West.

If you use Google Photos regularly, you're probably already aware of its impressive machine-learning skills. Searching for keywords such as "cactus," "Golden Gate Bridge," or "baseball" in your photo roll will bring up eerily appropriate images. It doesn't matter if you don't tag your shots; the results are driven by machine learning, not by metadata. The same search functionality exists in Google Drive. If you store or share images with Drive, the same text-based searches will bring up results there, too.

And the artificial intelligence chatbot that didn't survive a day on the Internet. Plus: Reviewing Santiago Calatrava's latest, how to be unprofessional and the "Grand Theft Auto" modification that may have you watching for hours on end. Time has Russian drone footage that provides an overview of what remains of the old Silk Road crossroads, as well as the contemporary human settlement of Tadmur that sits nearby. About 80% of the artifacts appear to be largely intact. The country's antiquities chief says repairs will take five years.

"The robots are coming" is not something Paul Revere said during the American Revolution, but it is certainly something many people have uttered over the years. So have we finally reached the tipping point where artificial intelligence and robots will begin to take over human jobs en masse? Perhaps not, but we are closer to the time when they will be even more essential assets and presences in the workforce, explains Martin Ford, the author of the book "Rise of the Robots." I caught up with Ford at The Economist magazine's Innovation Forum event, which was held earlier this month. He pointed out that artificial intelligence is making its way into sectors that were once manned by only man, including the legal profession, where computer systems such as Watson could muscle in on human territory to provide legal counsel, and even journalism where stories are being written without direct human input about some articles.

KOLKATA, India -- Across a bustling intersection from one of the first dead-letters offices, a pale blue sign beseeches pedestrians to join the future. Several hundred feet separate old, colonial India from the promise of a new, technologically transformed country. An Uber sign urges traffic safety and a gentle nudge for the ride-sharing service, which is wildly popular here. In Kolkata, capital of the Indian state of West Bengal, there are traces of the future amid decaying buildings and staggering poverty. Samsung Electronics and Dell signs mark the entrance to a dilapidated Victorian structure in the heart of the city. Kolkata is India's untold story in tech.

This blog post is authored by Brandon Rohrer, Senior Data Scientist at Microsoft. The raw stuff of data science is a collection of numbers and names. Measurements, prices, dates, times, products, titles, actions--everything is fair game. You can use images, text, audio, video and other complex data too, as long as you have a way to reduce it to numbers and names. The mechanics of getting data can be quite complex. But this guide is focused on the data science, so I'll leave that topic for another time. Data science is the process of using names and numbers to answer a question.