Get ready for all sorts of updates and announcements from Facebook. The social network kicks off its annual developers' conference, F8, on Tuesday and the biggest topics on the agenda will likely be Messenger and video. Since Facebook first started letting businesses integrate with its chat app, Messenger, at last year's conference, it has continued to give companies more ways to use it to communicate with potential customers. Facebook's thesis is that some people hate talking on the phone and would rather do something -- buy a shirt, order an Uber, make a dinner reservation, check their flight status -- within a chat interface. So, it wants to turn Messenger into a full-on platform for retrieving information and getting things done through natural-seeming conversations with businesses.

SpaceX has arrived at the International Space Station (ISS), delevering the world's first inflatable tent for astronauts. The US aerospace company's unmanned Dragon cargo ship, carrying lettuce seeds, lab mice and an inflatable pop-up room, arrived on Sunday at the space station where six spacecraft are now docked. British astronaut Tim Peake reached out with the station's robotic arm and grappled the Dragon, carrying its nearly 3,175kg of gear, at 7:23am (11:23 GMT). "It looks like we've caught a Dragon," said Peake. Four Russian spaceships - two Progress cargo carriers and two Soyuz capsules which ferry astronauts - are docked at the space station, along with Orbital ATK's Cygnus cargo ship and SpaceX's Dragon. Not since 2011, during the final flight of the space shuttle Discovery, have there been six vehicles parked at the ISS at the same time, NASA said.

George Hotz, the latest Silicon Valley startup founder to get a multimillion-dollar check from venture capitalists, went for a ride in a Rolls-Royce around San Francisco on Monday. At 26, Hotz thinks he could teach the legendary vehicle a few tricks. Braking should be smoother, he says. The vehicle should run each time as if the best limo driver in the world was behind the wheel. "You don't want the champagne to spill," Hotz says.

Humans become aroused when touching robots in sensitive places, a new study has found. Far from seeing robots as just computers, humans can become physiologically aroused from touching a human-shaped robot in private places like their eyes and buttocks, the Stanford study found. The results could have huge consequences for the creation of robots in the future, such as ones that people live or even have sex with. It might also help people create "robot stand-ins", that allow people to touch others when actually being there isn't an option, the researchers said. Scientists have taken a leaf out of the script of The Martian by showing how easy it would be to grow your own veg on the Red Planet.

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.