General Physics Apr 22, 2019

Defying the laws of physics? Engineers demonstrate bubbles of sand

The flow of granular materials, such as sand and catalytic particles used in chemical reactors, explains a wide range of natural phenomena, from mudslides to volcanos, and enables a broad array of industrial processes, from ...

Optics & Photonics Apr 29, 2019

New 3-D printed microscope promising for medical diagnostics in developing countries

Researchers have used 3-D printing to make an inexpensive and portable high-resolution microscope that is small and robust enough to use in the field or at the bedside. The high-resolution 3-D images provided by the instrument ...

Earth Sciences Apr 26, 2019

Antarctica's effect on sea level rise in coming centuries

There are two primary causes of global mean sea level rise - added water from melting ice sheets and glaciers, and the expansion of sea water as it warms. The melting of Antarctica's ice sheet is currently responsible for ...

Astronomy Apr 29, 2019

Swan EGGs in the sky: Astronomers conduct radio observations of free-floating evaporating gas globules in Cygnus OB2

Using the Giant Metrewave Radio Telescope (GMRT), astronomers have carried out radio observations of the so-called free-floating evaporating gas globules or (frEGGs) in the Cygnus OB2 region. Results of this observational ...

General Physics Apr 19, 2019

Thermodynamic magic enables cooling without energy consumption

Physicists at the University of Zurich have developed an amazingly simple device that allows heat to flow temporarily from a cold to a warm object without an external power supply. Intriguingly, the process initially appears ...

Optics & Photonics Apr 29, 2019

New technique could pave the way for simple color tuning of LED bulbs

Volkmar Dierolf and an international team demonstrate the possibility of tuning the color of a GaN LED by changing the time sequence at which the operation current is provided to the device.

Social Sciences Apr 27, 2019

The dead may outnumber the living on Facebook within 50 years

New analysis by academics from the Oxford Internet Institute (OII), part of the University of Oxford, predicts the dead may outnumber the living on Facebook within fifty years, a trend that will have grave implications for ...

Cell & Microbiology Apr 29, 2019

An important function of non-nucleated sperm

Some animals form characteristic infertile spermatozoa called parasperm, which differ in size and shape compared to fertile sperm produced by single males. Species that have been reported to produce parasperm include snails, ...

Biotechnology Apr 29, 2019

Plant cells eat their own... membranes and oil droplets

Biochemists at the U.S. Department of Energy's Brookhaven National Laboratory have discovered two ways that autophagy, or self-eating, controls the levels of oils in plant cells. The study, published in The Plant Cell on ...

Archaeology & Fossils Apr 27, 2019

Egyptologist in Canada presents theory of two queen rule before Tutankhamun

Tutankhamun, the boy king of ancient Egypt, came to power only after two of his sisters jointly held the throne, according to an Egyptologist at Canada's Universite du Quebec a Montreal (UQAM).

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