402 articles from THURSDAY 19.11.2020

China prepares to launch mission to collect moon rocks

Long March-5 rocket has been rolled into position for ignition expected this monthChina is preparing to launch its lunar sample return mission, Chang’e-5. On Tuesday the 57-metre Long March-5 rocket was rolled into position at the Wenchang spacecraft launch site in south China’s Hainan province.This will be the fifth launch of the Long March-5. According to the China National Space...

Canada govt seeks carbon neutrality by 2050

The government of Canadian Prime Minister Justin Trudeau on Thursday submitted draft legislation that it said would allow the country to be carbon neutral by 2050, but his opponents dismissed the initiative as "smoke and mirrors."

Increasing diversity and community participation in environmental engineering

Black, Hispanic, and Native American students and faculty are largely underrepresented in environmental engineering programs in the United States. A pathway for increasing diversity and community participation in the environmental engineering discipline is proposed in the peer-reviewed journal Environmental Engineering Science.

Elephant genetics guide conservation

A large-scale study of African elephant genetics in Tanzania reveals the history of elephant populations, how they interact, and what areas may be critical to conserve in order to preserve genetic diversity for species conservation. The study, by researchers at Penn State, appears online in the journal Ecology & Evolution and is the first to explore gene flow—a process vital to maintain...

Researchers invent novel vertical-cavity surface-emitting laser

Researchers at the George Washington University have developed a new design of vertical-cavity surface-emitting laser (VCSEL) that demonstrates record-fast temporal bandwidth. This was possible by combining multiple transverse coupled cavities, which enhances optical feedback of the laser. VCSELs have emerged as a vital approach for realizing energy-efficient and high-speed optical interconnects...

Students discover hidden 15th-century text on medieval manuscripts

Rochester Institute of Technology students discovered lost text on 15th-century manuscript leaves using an imaging system they developed as freshmen. By using ultraviolet-fluorescence imaging, the students revealed that a manuscript leaf held in RIT's Cary Graphic Arts Collection was actually a palimpsest, a manuscript on parchment with multiple layers of writing.

NSF plans to decommission Arecibo Observatory's 305m telescope due to safety concerns

Following a review of engineering assessments that found damage to the Arecibo Observatory cannot be stabilized without risk to construction workers and staff at the facility, the U.S. National Science Foundation will begin plans to decommission the 305-meter telescope, which for 57 years has served as a world-class resource for radio astronomy, planetary, solar system and geospace research.

Vibrations of coronavirus proteins may play a role in infection

When someone struggles to open a lock with a key that doesn't quite seem to work, sometimes jiggling the key a bit will help. Now, new research from MIT suggests that coronaviruses, including the one that causes COVID-19, may use a similar method to trick cells into letting the viruses inside. The findings could be useful for determining how dangerous different strains or mutations of...

Green hydrogen: Buoyancy-driven convection in the electrolyte

Hydrogen produced by using solar energy could contribute to a climate neutral energy system of the future. But there are hurdles on the way from laboratory scale to large-scale implementation. A team at HZB has now presented a method to visualize convection in the electrolyte and to reliably simulate it in advance with a multiphysics model. The results can support the design and scaling up of this...

Researchers have succeeded in directly observing the formation and interaction of highly ionized krypton plasma

The last decade has been marked by a series of remarkable discoveries identifying how the universe is composed. It is understood that the mysterious substance dark matter makes up 85 % of the matter in the universe. Observable matter in the universe consists of ionized particles. Thus, a profound understanding of ionized matter and its interaction with light, could lead to a deeper understanding...

Sky survey reveals newborn jets in distant galaxies

Astronomers using data from the ongoing VLA Sky Survey (VLASS) have found a number of distant galaxies with supermassive black holes at their cores that have launched powerful, radio-emitting jets of material within the past two decades or so. The scientists compared data from VLASS with data from an earlier survey that also used the National Science Foundation's Karl G. Jansky Very Large Array...

The secret social lives of giant poisonous rats

The African crested rat (Lophiomys imhausi) is hardly the continent's most fearsome-looking creature—the rabbit-sized rodent resembles a gray puffball crossed with a skunk—yet its fur is packed with a poison so lethal it can fell an elephant and just a few milligrams can kill a human. In a Journal of Mammology paper published today, the University of Utah, Smithsonian Conservation Biology...

Hidden 15th-century text on medieval manuscripts

Students have discovered lost text on 15th-century manuscript leaves using an imaging system they developed as freshmen. By using ultraviolet-fluorescence imaging, the students revealed that a manuscript leaf held in RIT's Cary Graphic Arts Collection was actually a palimpsest, a manuscript on parchment with multiple layers of writing.