AgriHouse, in Berthoud, Colo., says it has developed a device that lets plants send text messages alerting growers if their water uptake is too little, too much, or just right. The sensor clips onto a plant’s leaf and uses proprietary algorithms to translate its relative level of turgidity into a reading of its internal moisture content. See http://spectrum.ieee.org/may09/9029 .
The World Wide Web Is Very Good—and Very Bad
You can find any fact (but many are false) and any site—except those that have gone missing
Researchers Achieve Long-Distance Teleportation and Quantum Entanglement With Twisted Photons
Two quantum leaps in quantum communication
The Mt. Gox Bitcoin Debacle: An Update
Investigators are still tight-lipped and some observers disagree on just what happened
The Clock Is Ticking on Bitcoin's Future
Bitcoin's key players have until January to agree on a path for the currency, or there will be potential for mayhem
Leap Second Heads Into Fierce Debate
Countries are gearing up to decide the fate of UTC
IARPA’s New Director Wants You to Surprise Him
Jason Matheny, former leader of the Office for Anticipating Surprise, hopes to cast a wide net to help solve spy-agency problems
Disney Seeks to Make Visible Light Communication Practical
While using modulated LEDs to transmit data via visible ambient light isn't a new idea, Disney is trying to figure out how to make it work for us
Estimate: Human Brain 30 Times Faster than Best Supercomputers
The AI Impacts project estimates computer hardware could match the human brain in four to seven years
Adam Back Says the Bitcoin Fork Is a Coup
An opponent of the BitcoinXT proposal lays out all the bad outcomes for us
Google to Startups: (Mostly) Free Patents Here!
Trolls beware, Google's on to something with its latest IP experiment
Google Bought 28% of the Patents It Liked During Its Patent Purchase Experiment
It paid $250,000 for one but declined a $3.5 billion offer
The Bitcoin Blockchain Explained
And why it’s the future of the web
The Future of the Web Looks a Lot Like Bitcoin
Forget the currency; it’s the protocol behind it that matters. It will mutate and take over everything we do (or could one day do) on the Web. You’ve been warned
Mud-Fueled Smart Sensors for the Bottom of the Ocean
Engineers power a microprocessor-equiped sensor platform using dirt, germs, and a lack of air
Why IoT Needs 5G
Will 5G become the backbone of the Internet of Things?
Goldman Sachs Bets on Bitcoin
Goldman Sachs jumps in on a 50 million dollar funding round for Circle, a Boston-based Bitcoin startup.
All-photonic Quantum Repeaters: a Major Step Towards a Worldwide Quantum Internet
Matter quantum repeaters: The end of a dogma?
Car Camera Network Could Produce Virtual Maps of Pedestrians
The ability to track the same people between different camera views could aid real-time traffic maps
Anonabox Promises Total Online Anonymity That's Easy, Open Source, and Cheap
For $50 on Kickstarter, this router will completely protect your identity online
Escape From the Data Center: The Promise of Peer-to-Peer Cloud Computing
Today, cloud computing takes place in giant server farms owned by the likes of Amazon, Google, or Microsoft—but it doesn’t have to