Category archives: Technology

Neanderthal Y chromosome missing in modern humans The Neanderthal Y chromosome hasn’t been found in modern humans, suggesting it is extinct. Researchers found dissimilarities in the Neanderthal Y chromosome’s immunity genes that could have caused miscarriages. BBC Clouds may not help keep global temperatures down Clouds’ cooling power may not be as great as climate […]

We saw that one of the devices based on semiconductors are photocells. A photocell working in reverse is also useful. If a conduction electron in an n-p diode happens to fall into a hole, it will emit the excess energy as a photon, much as an electron would do in an atom as it jumps […]

Photos reveal possible planet-forming disk around young star Photos taken by the Atacama Large Millimeter/submillimeter Array, or ALMA, appear to show the birth of an alien planet similar to Earth along with other nascent worlds. The photos reveal a disk surrounding the star TW Hydrae that appears to have planets starting to form within it […]

A new vista in spintronics was opened in 2004 with the observation of the spin Hall effect in GeAs at 20 K by David Awschlom and his group. In the spin Hall effect the electrons of a charge current flow in a nonmagnetic conducting material in the absence of an external magnetic field. An applied […]

Synthetic cell with just 473 genes developed A synthetic cell containing just 473 genes, the smallest number of genes in any independent life form that exists in nature, has been developed by a team of scientists led by genomics expert Craig Venter. The functions of 149 of the genes in JCVI-syn3.0 are unknown. Nature Vivid […]

Suicide is one of the worst health and social problems in the modern world. Hundreds of millions of persons experience suicidal thoughts every year and between 10 and 20 millions went on to attempt suicide. In Spain, although the average risk is lower than in Northern countries, almost 4.000 persons die every year by their […]

Let’s take a p-type semiconductor with a very clean surface and place it right next to the clean surface of a n-type semiconductor. This type of device is called an n-p junction diode , or simply a diode . What happens? Scientists realized that the electrons in the conduction band of the n-type semiconductor are […]

Nowadays, the industry is centering their efforts on the development of single aerial robots carrying single objects, such as the widely-known drone of Amazon for delivering packages, which was followed by some national post-office services. However, other approaches go a step further and get to transport bigger objects in a cooperative way, reducing the payload […]

Radar detects objects in hidden rooms within Tutankhamun’s tomb Additional rooms in Tutankhamun’s burial chamber containing objects made of metal and organic materials have been detected through the north and west walls by radar scans. What is in these rooms is a mystery, but some experts say the rooms could be related to Queen Nefertiti […]

Mars’ magnetic field shaken by close comet flyby A comet streaking by Mars in 2014 wreaked havoc on the Red Planet’s fragile magnetic field, according to data collected by the Mars Atmosphere and Volatile Evolution, or MAVEN, spacecraft, according to NASA. Discovery Bacteria found in Japanese recycling center evolves to consume plastic A bacteria that […]