biology

Seasoning Livestock Feed With Curry Spices Cuts Methane Emissions 40 Percent

Popular Science - July 20, 2010 - 7:55am
Cutting Emissions from Cows Annie Kavanagh via Wikimedia

UK researchers seeking to cut back on greenhouse gases have found a deliciously potent weapon for fighting agricultural methane emissions: curry. It turns out two spices customarily used to season curry dishes -- coriander and turmeric -- have an antibiotic effect in the stomachs of sheep and cows, killing methane-producing bacteria there. By spicing up animal feeds, farmers could reduce methane emissions from farms by up to 40 percent. Read more »

Nanoscale Light Mill Spins a Motor with a Beam of Light

Popular Science - July 8, 2010 - 1:50am
The Nanoscale Light Mill Motor Ignore the Reich-i-ness of the motor's shape and you'll notice that at a shorter 810-nanometer wavelength the light strikes the outside of the motors arms, turning the motor counterclockwise. A larger 1,700-nanometer wave passes through to strike the elbows, turning the motor the opposite direction. Image courtesy of Zhang group

Whether wielded by Egyptian sun gods, Luke Skywalker, or your run of the mill solar-thermal power plant, light has the potential to do big things. Thanks to a breakthrough by UC Berkeley and the DOE's Lawrence Berkeley National Lab, we can now make light do very small things as well. Researchers there have created the first nano-sized light mill motor that can be manipulated in both speed and direction by tuning the frequency of the light waves that serve as its power source. Read more »

Scientists Watch Grass Grow, at the Cellular Scale

Popular Science - June 15, 2010 - 7:44am
A. thaliana cell development A new video animation shows cellular development in Arabidopsis thaliana, shedding light on how plants grow. Nature Methods via Scientific American

Watching grass grow is way more interesting than you think. In an effort to understand cellular development in plants, a team of French scientists made a surprisingly exciting video animation of grass growing at the cellular scale. Read more »

Steven Chu Breaks Record for Highest-Resolution Optical Imaging, Cracking Nanometer Limit

Popular Science - July 16, 2010 - 3:14am
Energy Secretary and National Genius Steven Chu Left: Chu considers getting scientific. Middle: Dubious Chu. Right: Chu dropping some serious science. Stand back, son! Stanford University, Lawrence Berkeley National Laboratory

The Secretary of Energy is still publishing

A Nature paper co-authored by Steven Chu, Nobel laureate and Energy Secretary of the United States, describes a big breakthrough in the science of the very small: a method of optical microscopy that can image at resolutions as small as half a nanometer, a full order of magnitude smaller than the previous finest optical resolution. Read more »

DARPA's Dynamic Duo Plans to Turn Biology into Tools for Troops, Somehow

Popular Science - July 7, 2010 - 7:21am
Batman and Robin Shaun Wong via Flickr

DARPA is an interesting and innovative agency, not only because it pushes the science and technology envelopes, providing funding, purpose, and goals to R&D houses looking to create next-gen technology, but also because its talents are unparalleled when it comes to acronyms.

Take, for instance, the agency's two newest initiatives: Biochronicity and Temporal Mechanisms Arising in Nature, and Robustness of Biologically-Inspired Networks. That's right: BaTMAN and RoBIN. Read more »