The use of concrete dates back to ancient Rome, and the recipe hasn't changed much since then. Neither have some of concrete's drawbacks. In particular, the slow deformation known as "concrete creep" has afflicted structures from the Pantheon to the Pentagon. But MIT scientists believe they have solved the mystery of concrete creep, and thus opened the door to structures that will last tens of thousands of years.
Last week we were treated to the unusual story of a human-versus-meteorite collision.
According to the Daily Telegraph, the youth whose hand was in the path of the pea-sized meteor saw a "ball of light." The article also made the claim that the impact with the ground left a "foot-wide crater." Both of these assertions are highly unlikely, as we shall see by simply applying some basic physics to the situation.
Bike sharing is an urban transportation program gaining popularity worldwide, providing public bicycles at designated points around a city--find it, ride it, drop it off at a kiosk down the road when you're done.
Cykel, a concept bike sharing system by Brian Mcallister able to switch between pedal-power and electric motor, could open up the program to new demographics, increase the range of most bikers, and make cities with more difficult topographies more accessible. Not to mention making the typically pedestrian-looking shared rides a lot slicker.
A supermarket in the UK is using a novel way of harnessing energy from their customers. Embedding their parking lot with weight-sensitive plates, cars impart kinetic energy as they pass through, which is then collected and used to power their cash registers.
When a car drives by, plates are depressed and the motion is passed along hydraulics to a generator, which produces 30kw of energy an hour. If one parking lot can power cash registers, imagine packing roads with this technology and how much energy can be recollected from all the world’s drivers?
As you have heard (by now, ad nauseum), the protests surrounding Iran’s troubled and disputed presidential election this past Friday have highlighted how technology and social media are redefining the way moments of mass political unrest are reported, live. Instead of watching CNN, you can observe the same on-the-ground reporting--all in real time--that the CNN folks are watching and then passing on to you. Here's where to find it.
Inspired by designs created by his father decades ago, Jared Potter is building an arsenal of ultra-powerful flame-jet drills. As seen in the NatGeo video above, one prototype directs a jet of burning hydrogen at 3200°F against a slab of solid granite.
Your mother told you never to speak to strangers, but what if the stranger was a robot on wheels, who was lost and needed your help? Thirty-eight people in this very predicament chose to speak to the waylaid robot, whose task was to cross a busy city without a map or GPS. All it could do was ask directions.
Editor Mike Haney is training for the New York City Marathon with all the help from high-end running tech he can get. Read his previous posts here.
I don't run for the pure spiritual joy of it, or for the sense of community or with hopes that I'll ever win anything. I run so that I can cook with as much butter and eat as much BBQ as I want, without worrying about my gut or my arteries. So when there's a marathon on the horizon, I need a plan that tells me when to run and for how long. Lucky for me, the New York Times just got into the coaching business.
Neuroscientists are already able to read some basic thoughts, like whether an individual test subject is looking at a picture of a cat or an image with a specific left or right orientation. They can even read pictures that you're simply imagining in your mind's eye. Even leaders in the field are shocked by how far we've come in our ability to peer into people's minds. Will brain scans of the future be able to tell if a person is lying or telling the truth?