Researchers of the ISREC Institute at the School of Life Sciences, EPFL, have deciphered the mechanism whereby some microRNAs are retained in the cell while others are secreted and delivered to neighboring cells.
Why do we continue to detect the cosmic background radiation? Is the fact that we continue to eternally see the cosmic background radiation billions of years after it was generated proof of either inflation, or that the universe must be curved back upon itself (i.e. that it is finite but unbounded)? Or if neither of these are requirements, then what are other explanations?
I want you to think about the history of the Universe.
Scientists from Stanford Medical Center have devised a technique for extending the length of human telomeres. It's a breakthrough that could eventually result in therapies to treat a host of age-related diseases, including heart disease and diabetes. It could also result in longer, healthier lives.
(Phys.org)—To understand cell function, we need to be able to study them in their native environment, in vivo. While there are many techniques for studying cells in vitro, or in the laboratory setting, in vivo studies are much more difficult.
Engineers have shone new light on an emerging family of solar-absorbing materials that could clear the way for cheaper and more efficient solar panels and LEDs. The materials, called perovskites, are particularly good at absorbing visible light, but had never been thoroughly studied in their purest form: as perfect single crystals. Using a new technique, researchers grew large, pure perovskite crystals and studied how electrons move through the material as light is converted to electricity.
Revolutionary software is making a breakthrough in reading 2,000-year old Herculaneum scrolls, computer scientists report. After working for more than 10 years on unlocking an ancient piece of history, what lies inside damaged Herculaneum scrolls, one researcher will accomplish the next step in allowing the world to read the scrolls, which cannot be physically opened.
Researchers have found an RNA structure-based signal that spans billions of years of evolutionary divergence between different types of cells, according to a new study. The finding could alter the basic understanding of how two distinct life forms -- bacteria and eukaryotes -- begin the process of protein synthesis.
The anatomy of the Milky Way as seen in gamma light is full of mysteries. For example, there are gigantic bubbles of unknown origin above and below the centre of the Milky Way that emit a lot of this high-energy radiation. A new method for imaging, developed at the Max Planck Institute for Astrophysics, now divided the Galactic gamma-radiation into three fundamental components: radiation from point sources, radiation from reactions of energetic protons with dense cold gas clouds, and radiation from electrons scattering light in the thin, hot, Galactic gas. The anatomic insights gained unravel some Galactic mysteries. Thus, it appears that the gamma-ray bubbles are simply outflows of ordinary, hot gas.
Sir Isaac Newton's interest in botany extended well beyond the fabled apple falling from a tree - he also appears to have understood how water moves from roots to leaves over 200 years before botanists did.
They mocked when Edgar Allan Poe published his prose poem "Eureka" in his last year of life, describing how the universe had begun with a single "primordial particle" that exploded outwards in "one instantaneous flash." But 80 years later,...
(Phys.org) —The quintessential feature of a black hole is its 'point of no return,' or what is more technically called its event horizon. When anything—a star, a particle, or wayward human—crosses this horizon, the black hole's massive gravity pulls it in with such force that it is impossible ...
There is a cliche you hear all the time when scientists describe their experiments: “We expect the unexpected,” or its jokier cousin, “If we knew what we were doing it wouldn’t be called research.” (That second one is often, but dubiously, attributed to Albert Einstein.) But like many cliches, this one is built on a …
Life probably arose on Earth some 3.5 to 4 billion years ago, but all records of the momentous event have vanished—here on the Blue Marble, at least. Traces of our lost origin story might instead be buried on the Moon, according to new research published in the journal Astrobiology.
“Unlike the Earth, the Moon has been geologically quiet for billions of years, meaning there is a good chance these organic and volatile records remain relatively intact,” Richard Matthewman, the study’s lead author, told me.
Scientists using ice-penetrating radar data collected by NASA's Operation IceBridge and earlier airborne campaigns have built the first comprehensive map of layers deep inside the Greenland Ice Sheet, opening a window on past climate conditions and...
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