A new arms race in our skies threatens the satellites that control everything from security to communications ... the activities of the mystery “ghost” satellite have given many in the defence and intelligence community pause for thought. ... Space, military officials like to say, is the ultimate higher ground. Since the cold war ended, however, it has been a largely uncontested territory. In January 1967, the US, UK and USSR became the first signatories to the Outer Space Treaty. In it, they committed to keeping the moon free of military testing and not putting weapons of mass destruction into orbit. China joined the pact in 1984. Another 100 states are now signed up. ... Almost every country with strategically important satellite constellations and its own launch facilities is considering how to defend — and weaponise — their extraterrestrial assets. ... Satellites are fragile things: a nudge to their orbit, a tilt of their solar panels towards the sun, a laser blast directed at their sensors or a projectile casually fired into their path are all capable of wreaking permanent, irreversible damage. ... While developed societies are becoming more dependent on it than ever before for almost every aspect of their digital economies, their grip on the technologies that have given them global strategic dominance is slipping. And as more countries around the world look to maximise their military advantages, space is becoming the most obvious domain to contest. ... The 1967 Outer Space Treaty had one glaring omission: it has no limits on the use of conventional weapons. Even as militaries around the world work hard to build their space weaponry arsenals, many are now wondering whether the treaty needs to be broadened.

The United States Air Force, which runs the G.P.S. Master Control Station, in Colorado, calls G.P.S. “the world’s only global utility.” Wholly owned by the U.S. government, the system is available free to everyone, everywhere; an ISIS terrorist glancing at his phone for a position fix benefits from the Pentagon’s largesse as much as a commuter on I-95. Since the first G.P.S. satellite was launched, in 1978, the system has steadily become the most powerful of its kind. (Other countries have navigation satellite networks, but none are as dependable or as widely available.) There are now around seven G.P.S. receivers on this planet for every ten people. Estimates of the system’s economic value often run into the trillions of dollars. ... The Pentagon’s Defense Advanced Research Projects Agency recently determined that, within thirty seconds of a catastrophic G.P.S. shutdown, a position reading would have a margin of error the size of Washington, D.C. After an hour, it would be Montana-sized. Drivers might miss their freeway exits, but planes would also be grounded, ships would drift off course, commuter-rail systems would be tied up, and millions of freight-train cars with G.P.S. beacons would disappear from the map. ... Fortunately, a worldwide G.P.S. failure is unlikely. A hacker or terrorist would require either a weapon powerful enough to destroy the satellites or a way to infiltrate the heavily fortified Master Control Station. The bigger worry is spoofing, the transmission of a bogus G.P.S. signal that nearby receivers mistake for the real thing.

Farms, then, are becoming more like factories: tightly controlled operations for turning out reliable products, immune as far as possible from the vagaries of nature. Thanks to better understanding of DNA, the plants and animals raised on a farm are also tightly controlled. Precise genetic manipulation, known as “genome editing”, makes it possible to change a crop or stock animal’s genome down to the level of a single genetic “letter”. This technology, it is hoped, will be more acceptable to consumers than the shifting of whole genes between species that underpinned early genetic engineering, because it simply imitates the process of mutation on which crop breeding has always depended, but in a far more controllable way. ... Understanding a crop’s DNA sequence also means that breeding itself can be made more precise. You do not need to grow a plant to maturity to find out whether it will have the characteristics you want. A quick look at its genome beforehand will tell you. ... Such technological changes, in hardware, software and “liveware”, are reaching beyond field, orchard and byre. Fish farming will also get a boost from them. And indoor horticulture, already the most controlled and precise type of agriculture, is about to become yet more so. ... In the short run, these improvements will boost farmers’ profits, by cutting costs and increasing yields, and should also benefit consumers (meaning everyone who eats food) in the form of lower prices. In the longer run, though, they may help provide the answer to an increasingly urgent question: how can the world be fed in future without putting irreparable strain on the Earth’s soils and oceans?

In 1609, Galileo wowed Venice’s big cheeses by letting them use his telescope to see ships way out at sea, a good two hours before their owners would see them enter the port. The Venetians were impressed (they doubled Galileo’s salary and gave him lifetime tenure at the University of Padua) because they immediately saw the huge financial and military advantages offered by this visionary device. A few hundred years later, we are on the cusp of an equally radical transformation in how information is gathered, analyzed and monetized. ... Seattle-based BlackSky Global is planning to launch six spacecraft; Terra Bella, a Google-Alphabet subsidiary, has two satellites in orbit and promises video that can “see objects up to the size of a car,” while Spire owns 17 orbiting satellites and plans to track ships in the world’s oceans. These and other upstarts are chasing imaging giants like DigitalGlobe, and Airbus, who have hundreds of millions of dollars of hardware floating miles above our heads. But no one has launched as fast and as often as Planet, a startup running out of an old gray warehouse in San Francisco’s Mission District. In a neighborhood filled mostly with vintage furniture stores, hip restaurants and coffee shops, Planet has 62 satellites in orbit, the world’s largest private collection, and by the end of the year it will have 100, enough that every nook, cranny and keyhole on Earth will get its own medium-resolution photo every single day. This avalanche of images will create an unprecedented database of the entire planet, one that can be used to stop forest fires and maybe even wars.

Next year it will be 60 years since people first witnessed the majesty of a satellite being launched into orbit: Sputnik 1, hurled into the night sky in Kazakhstan early on October 5th 1957. ... Just 15 years separated the launch of the first satellite and the return of the last man from the moon, years in which anything seemed possible. But having won the space race, America saw no benefit in carrying on. Instead it developed a space shuttle meant to make getting to orbit cheap, reliable and routine. More than 100 shuttle flights between 1981 to 2011 went some way to realising the last of those goals, despite two terrible accidents. The first two were never met. Getting into space remained a risky and hideously expensive proposition, taken up only by governments and communications companies, each for their own reasons. ... New rockets, though, are not the only exciting development. The expense of getting into space during the 1980s and 1990s led some manufacturers to start shrinking the satellites used for some sorts of mission, creating “smallsats”. Since then the amount a given size of satellite can do has been boosted by developments in computing and electronics. This has opened up both new ways of doing old jobs and completely novel opportunities. ... No single technology ties together this splendid gaggle of ambitions. But there is a common technological approach that goes a long way to explaining it; that of Silicon Valley. Even if for now most of the money being spent in space remains with old government programmes and incumbent telecom providers, space travel is moving from the world of government procurement and aerospace engineering giants to the world of venture-capital-funded startups and business plans that rely on ever cheaper services provided to ever more customers.

Consider the number of networked cameras that capture data about you as you go about your day. Surveillance cameras are mounted in offices, stores, public transportation; on city streets, ATM machines, and car dashboards. You or your neighbors may have installed cameras to watch over your front door; you may have a webcam watching over your valuables—perhaps even your children. Security cameras are virtually everywhere, installed both to provide a record if a crime is committed and to deter people from committing a crime in the first place. Based on an exhaustive survey of the number of such cameras in one English county in 2011, it was estimated there were 2 million surveillance cameras in the United Kingdom alone—about one camera for every thirty people. ... Generalizing this to the rest of the world, there are about 100 million cameras watching public spaces, all day and all night. Yet, this is only one-tenth of the 1 billion cameras on smartphones. Within the next few years, there will be one networked camera for every single person on the planet. ... If technology continues to follow Moore’s Law, doubling the computing power available at the same price every 18 months, we will very likely be sharing the world with roughly 1 trillion sensors by 2020, in line with projections from Bosch, HP, IBM, and others. ... If everything is recorded, will it encourage "better" behavior? And how will the lack of any recording be interpreted?

Although robotic ships of this sort are some ways off in the future, it’s not a question of if they will happen but when. My colleagues and I at Rolls-Royce anticipate that the first commercial vessel to navigate entirely by itself could be a harbor tug or a ferry designed to carry cars the short distance across the mouth of a river or a fjord and that it or similar ships will be in commercial operation within the next few years. And we expect fully autonomous oceangoing cargo ships to be routinely plying the world’s seas in 10 or 15 years’ time. ... Remotely controlled ships, piloted by people on shore, and autonomous ships, which can take actions for themselves, are the latest beneficiaries of increasing digital connectivity and intelligence. These developments in electronic sensors, telecommunications, and computing have sparked interest in a range of autonomous vehicles including cars, planes, helicopters, trains, and now ships. ... That people should be seriously interested in robotic ships is easy enough to explain: Such ships are expected to be safer, more efficient, and cheaper to run. According to a report published by the Munich-based insurance company Allianz in 2012, between 75 and 96 percent of marine accidents are a result of human error, often a result of fatigue.