Science | WPN World People News

In the graphene liquid cell, opposing graphene sheets form a sealed liquid nanoscale reaction chamber that is transparent to an electron microscope beam. The cell allows nanocrystal growth, dynamics and coalescence to be captured in real time at atomic resolution via a transmission electron microscope.

This illustration shows how a DNA origami nanoplate with a central aperture can serve as a smart lid or "gatekeeper" for a solid-state nanopore sensor. Researchers at the Technische Universitaet Muenchen have demonstrated that this arrangement can be used to filter biomolecules by size or to "fish" for specific target molecules by placing single-strand DNA receptors inside the aperture as "bait." With further research, they suggest, it might be possible to use such single-molecule sensors as the basis of a novel DNA sequencing system.

Britain's Department for Transport is likely to approve installation of a new generation of airport scanners, which would lift the ban on carrying liquids by passengers.

Russia says it will join the European Space Agency to launch a mission to Mars to sample dirt for signs of life.

The peculiar galaxy Centaurus A as seen in longer infrared wavelengths and X-rays. Inner structural features seen in this image are helping scientists to understand the mechanisms and interactions within the galaxy, as are the jets seen extending over thousands of light years from the black hole believed to be at its heart. Newly discovered clouds co-aligned with the jets can also be seen in the infrared data, which are colored red and orange.

Time is running out for the galaxy NGC 3801, seen in this composite image combining light from across the spectrum, ranging from ultraviolet to radio. NASA's Galaxy Evolution Explorer and other instruments have helped catch the galaxy NGC 3801 in the act of destroying its cold, gaseous fuel for new stars. Astronomers believe this marks the beginning of its transition from a vigorous spiral galaxy to a quiescent elliptical galaxy whose star-forming days are long past.

Researchers have come up with a 3D map of the sky, which facilitates scientists to look into the time six billion years ago when dark energy became a dominant influence on the Universe's expansion.

Experts and officials gathered at the first Africa Forum on Science, Technology and Innovation in Nairobi, Kenya are seeking African solutions to African problems. Participants are calling for African governments to fund and promote research and development at home.

A surge of infrared radiation from nitric oxide molecules on March 8-10, 2012, signals the biggest upper-atmospheric heating event in seven years.