A California startup called Zipline International has announced a partnership with the government of Rwanda to use its fixed-wing cargo drones to deliver medical supplies to remote health clinics in the East African nation. The Zip aircraft is made by Bay Area startup Zipline, which will begin drone delivery of blood and medicine to remote Rwandan clinics later this year. SAN FRANCISCO-- How's this for a flight plan to get a drone delivery service financially aloft? Carry cargo that's of live-saving importance, fly long-range fixed-wing aircraft in uncongested skies, and score a government as your first client. That's the atypical approach being taken by Zipline, a Bay Area startup that has raised 18 million in funding from Yahoo founder Jerry Yang, Microsoft co-founder Paul Allen and others.

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.

It might sound odd that Rwanda will have an established a drone network before the United States, but it makes sense for the country to deliver lifesaving cargo using drones. In developing nations, you often have to deal with unpaved -- or even lack of -- roads, heavy traffic, lack of access to transportation, among other things. With a drone network in place, a clinic can send a text message, and a drone could be there in 30 minutes if it's within 90 miles of the UAVs' homebase. That said, a startup called Flirtey recently made the first FAA-approved drone delivery in Nevada, so the industry is at least making some progress in the US. Rwanda plans to expand its drone network's capabilities to benefit the country's economy.

For many people in Zambia with health queries, sending a text message is the best way to get it answered. U-report, a free SMS-based service set up by UNICEF and run by volunteers, receives many thousands of questions a month, many specifically about HIV and AIDS. Also popular in Uganda, U-report has seen usage triple in the last three years, and about a thousand new users register every day. The volume of messages is growing so fast that the volunteers can't keep up, so UNICEF is testing software that reads and responds to many of the messages automatically. In Zambia, there are roughly 27,000 new HIV infections a year, according to UNICEF, and 40 per cent of these are in those aged 15 to 24.

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.

Microsoft CEO Satya Nadella has reshaped the company since taking over two years ago. Windows is still important, but it's no longer the only platform that matters: Microsoft is releasing software and supporting app development for Apple's iOS, Google's Android, and even its old enemy Linux. The infighting and aggressive dismissal of competitors is mostly gone. And Nadella has embraced cloud computing -- the idea that some customers don't want to run their own technology but would prefer to outsource it -- turning Microsoft into the clear No. 2 in the category after Amazon. We caught up with Nadella fresh off the company's Build conference for developers last week in San Francisco and ahead of the new Envision conference for business leaders, which kicks off Monday in New Orleans. Matt Rosoff: There was a lot of talk last week at Build about chatbots and artificial agents and "conversation as a platform." That idea is not new, right? I think I heard Bill Gates talking about it 15 years ago.

For his last hurrah, Nathan Drake is getting some help from an unlikely ally. The jovial treasure hunter has been the star of the Uncharted series since the first entry debuted in 2007 for PlayStation 3. Nearly 10 years and 21 million copies sold later, developer Naughty Dog is ready to say goodbye to the action-adventure franchise with Uncharted 4: A Thief's End (out May 10 exclusively for PlayStation 4). During a recent presentation for the press in Los Angeles, creative director Neil Druckmann said "compromising was never an option" for Nate's swan song, hence the numerous delays the game went through before the studio firmly settled on a date. Naughty Dog wasn't satisfied with just making a larger, prettier sequel. A lot of the innovations in Uncharted 4 actually occur in between the action-packed set pieces and impressively detailed cutscenes.

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.

Drones first glided into the public imagination in the early 2000s when the US Air Force and the CIA started using school bus-sized Predator and Reaper unmanned aerial vehicles for surveillance and airstrikes in the Middle East. These days, the US Army wants something a bit smaller: Pocket-sized drones that soldiers can use in battle zones to see around corners, over hills, or behind trees to aoid ambushes and other surprises. Ideally, soldiers will be able to launch such a nano-drone quickly, the Army says. "It will send real-time video back to the operator to give them real-time situational awareness of what's in the immediate vicinity," says says Phil Cheatham, the deputy branch chief for electronics at the Army's Maneuvers Center for Excellence (MCOE). The Army wants something affordable that can be ordered in bulk to provide a drone to each squad. The Army already uses satellite imagery and larger drones to provide broader battlefield intelligence, Cheatham says.