Wednesday, June 26, 2019

Nasa puts up deep-space atomic clock

Nasa has put a miniaturized atomic clock in orbit that it believes can revolutionize deep-space navigation.
About the size of a toaster, the device is said to have 50 times the stability of existing space clocks, such as those flown in GPS satellites.
If the technology proves itself over the next year, Nasa will install the clock in future planetary probes.
The timepiece was one of 24 separate deployments from a Falcon Heavy rocket that launched from Florida on Tuesday.
The other passengers on the flight were largely also demonstrators. They included a small spacecraft to test a new type of "green" rocket fuel, and another platform that aims to propel itself via the pressure of sunlight caught in a large membrane; what's often called a "lightsail".

Tuesday, June 25, 2019

Our Universe Might Be Trapped Inside An Enormous Black Hole!

For almost a century, the Big Bang theory has been bandied as the ultimate theory that describes the origin of the universe. The universe, as we know by it, was created in a massive explosion that created the majority of the matter which our physical laws abide by. Scientists believe that our galaxy, the Milky Way, came into existence billions of years ago, following the Big Bang and that the already-vast universe is an ever-expanding cosmos.
Now, a recent breakthrough states that black holes also have the singularity trait in common with the universe. The new study conducted by a team of progressive astrophysicists at Canada’s University of Waterloo has mentioned that the universe exists farther from the horizon of a huge black hole with higher dimensions, and it might have been present in the cosmos right from the very beginning of time.

Friday, May 10, 2019

Nature crisis: Humans 'threaten 1m species with extinction'

On land, in the seas, in the sky, the devastating impact of humans on nature is laid bare in a compelling UN report.
One million animal and plant species are now threatened with extinction.
Nature everywhere is declining at a speed never previously seen and our need for ever more food and energy are the main drivers.
These trends can be halted, the study says, but it will take "transformative change" in every aspect of how humans interact with nature.
From the bees that pollinate our crops, to the forests that hold back flood waters, the report reveals how humans are ravaging the very ecosystems that support their societies.
Three years in the making, this global assessment of nature draws on 15,000 reference materials, and has been compiled by the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES). It runs to 1,800 pages.

Could viruses called bacteriophages be the answer to the antibiotic crisis?

Our generation has been lucky enough to live through a golden age in medicine – the age of antibiotics, where drugs to kill bacterial infections off quickly are readily available. Now, though, growing numbers of bacteria are becoming resistant to our most powerful drugs, evolving into new strains – often called ‘superbugs’ – that we can no longer kill. Already drug resistance kills over 700,000 people globally every year and if we fail to tackle the problem it could cause an extra 10 million deaths a year by 2050.
New antibiotic drugs are proving difficult to find – but there is a completely different approach to killing bacteria that may prove vital in saving us from infections: using viruses.

also Here 

Increased risk of cancer from mobile phone use

The inconvenient truth about cancer and mobile phones



 On 28 March 2018 , the scientific peer review of a landmark United States government study concluded that there is “clear evidence” that radiation from mobile phones causes cancer, specifically, a heart tissue cancer in rats that is too rare to be explained as random occurrence.
Eleven independent scientists spent three days at Research Triangle Park, North Carolina, discussing the study, which was done by the National Toxicology Program of the US Department of Health and Human Services and ranks among the largest conducted of the health effects of mobile phone radiation. NTP scientists had exposed thousands of rats and mice (whose biological similarities to humans make them useful indicators of human health risks) to doses of radiation equivalent to an average mobile user’s lifetime exposure.


See also Article from Journal of Environmental research

Wednesday, April 10, 2019

Meltdown: Glaciers will vanish entirely by end of century if current rate continues

Earth's glaciers are melting much faster than scientists thought. A new study shows they are losing 369 billion tonnes of snow and ice each year, more than half of it in North America.
The most comprehensive measurement worldwide found thousands of inland masses of snow compressed into ice are shrinking 18pc faster than an international panel of scientists calculated in 2013.
The world's glaciers are shrinking five times faster now than they were in the 1960s. Their melt is accelerating due to global warming, and adding more water to already rising seas, the study found.
"Over 30 years, suddenly almost all regions started losing mass at the same time," said lead author Michael Zemp, director of the World Glacier Monitoring Service at the University of Zurich. "That's clearly climate change if you look at the global picture."

Thursday, March 15, 2018

Leo Varadkar honours US-based Irish scientists

Leading physicist Prof Margaret Murnane was awarded the Science Foundation Ireland’s St Patrick’s Day Science Medal. Photograph: John Harrington

Taoiseach Leo Varadkar has presented Science Foundation Ireland’s St Patrick’s Day Science Medal to Prof Margaret Murnane, a world leader in development of fast-pulsed lasers, and to David McCourt, an innovation and technology pioneer.
At an event at the US Institute of Peace in Washington on Wednesday, Mr Varadkar said he was delighted to recognise two inspiring leaders who were contributing significantly to research and innovation but also members of the Irish diaspora.

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