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.
Nanomotors hold the promise of one day powering tiny robots that could do everything from fighting viruses to cleaning up toxic waste. Thanks to some scientists at the University of Florida, that day is getting rapidly closer; and some of these robots might end up solar-powered.
A new paper published in the journal Nano Letters details how the researchers created the first light-powered nanomotor out of a photoreactive chemical and a short length -- only 31 base pairs -- of DNA.
Hand-washing: it seems easy enough, but for whatever reason, we constantly shirk this simplest of duties. These days we have swine flu to remind us, but what about when that becomes old news? Microbes don't disappear just because they're not in the news every day.
A few University of Florida professors have invented a solution -- HyGreen, a sensor system that can sniff your hands to detect telltale soap fumes -- or the lack thereof.
Generally, DNA is only good for preserving and passing on blueprints for making organisms. However, scientists at MIT and Boston University have altered E. coli DNA to perform another function within the cell, like basic computing. Essentially, they've taught E. coli to count.
In anticipation of a new United Nations resolution on climate change and security, two new reports and a statement from twenty Nobel Laureates highlight the direct impact of climate change on the world's most vulnerable populations. And the news is decidedly not good.
A chef and a professor are teaming up to create a dining experience that capitalizes on synaesthetic perception that links tastes to certain sounds. Synaesthesia is the association of different sensory perceptions -- hearing shapes or seeing music.
This morning, a 7.1 magnitude earthquake struck Belize and Honduras, resulting a few fatalities and some property damage.
Paul Earl, a seismologist with the United States Geological Survey, told Popsci.com that the quake emanated from the Swan Island Transform fault, a strike-slip fault not unlike the San Andreas fault in California. Both the location -- 80 miles off shore -- and the type of fault helped minimize the destruction caused by the event.
The world's changed a lot since 1994, and some of the signs of modern times -- obesity, Internet addiction - may find their way into the book that describes -- and guides diagnosis of -- psychiatric disorders. The latest Diagnostic and Statistical Manual of Mental Disorders, better known as DSM-V, will be landing with a massive thunk on physicians' and researchers' desktops in 2012, but until then, the American Psychiatric Association still has a lot of work to do in determining how the guide will be updated, the L.A. Times reports.
All pet owners will happily explain to you their dog or cat's character traits -- probably in far more detail than you ever wanted to know. But the idea of animal personality is not one that's been formally studied all that much.
A new study has classed a species of bird into groups of more and less aggressive males. Researchers gauged the response of male collared flycatchers to female birds, to a strange object, and to other males. They found that each type of individual displayed consistent behavior in each of these situations.