Climate change could spark more volcanoes, earthquakes, say experts

London, April 19 (ANI): Earthquakes and tsunamis are just the tip of the iceberg as climate change could lead to more “hazardous” geological events like volcanoes and landslides, experts have warned.

While rising temperature are predicted to cause the melting of ice, rise in sea level, heavy storms and rainfall, the Earth”s crust can be affected by all these phenomenon, according to papers published by the Royal Society.

Even minor changes in the environment could spark off earthquakes and tsunamis.

Bill McGuire, of the Aon Benfield UCL Hazard Research Centre at University College London, and the author of a review in the journal of research in the area, warns that warming temperatures could melt ice sheets and glaciers, thereby increasing the water content of oceans.

As the land “rebounds” after the weight of the ice has been removed – which could be as large as a kilometre in places like Greenland and Antarctica – then if, in the worst case scenario, all the ice were to melt, it could trigger earthquakes.

According to Prof McGuire, in Taiwan the lower air pressure created by typhoons was enough to “unload” the crust by a small amount and trigger earthquakes, reports the Scotsman.

Other consequences of rising temperatures include glacial lakes bursting out through rock dams and causing flash flooding in mountain regions like the Himalayas, with rock, ice and landslides as permafrost melts. (ANI)

Climate change could spark more volcanoes, earthquakes, say experts

London, April 19 (ANI): Earthquakes and tsunamis are just the tip of the iceberg as climate change could lead to more “hazardous” geological events like volcanoes and landslides, experts have warned.

While rising temperature are predicted to cause the melting of ice, rise in sea level, heavy storms and rainfall, the Earth”s crust can be affected by all these phenomenon, according to papers published by the Royal Society.

Even minor changes in the environment could spark off earthquakes and tsunamis.

Bill McGuire, of the Aon Benfield UCL Hazard Research Centre at University College London, and the author of a review in the journal of research in the area, warns that warming temperatures could melt ice sheets and glaciers, thereby increasing the water content of oceans.

As the land “rebounds” after the weight of the ice has been removed – which could be as large as a kilometre in places like Greenland and Antarctica – then if, in the worst case scenario, all the ice were to melt, it could trigger earthquakes.

According to Prof McGuire, in Taiwan the lower air pressure created by typhoons was enough to “unload” the crust by a small amount and trigger earthquakes, reports the Scotsman.

Other consequences of rising temperatures include glacial lakes bursting out through rock dams and causing flash flooding in mountain regions like the Himalayas, with rock, ice and landslides as permafrost melts. (ANI)

New evidence points towards water on Moon

London, September 19 (ANI): Two separate lunar missions have found evidence which indicates that the polar regions of the moon are chock full of water-altered minerals.

According to a report in Nature News, early results from NASA’s Lunar Reconnaissance Orbiter (LRO), launched on June 18, are offering a wide array of watery signals.

The Moon, in fact, has water in all sorts of places: not just locked up in minerals, but scattered throughout the broken-up surface, and, potentially, in blocks or sheets of ice at depth.

“We are on the verge of a renaissance in our thinking about the poles of the Moon, including how water ice gets there,” said Anthony Colaprete, principal investigator for the Lunar Crater Observation and Sensing Satellite (LCROSS), which on October 9, will slam into a polar crater with the intention of ploughing up a plume of water ice for many telescopic eyes to see.

The initial LRO results confirm what was long suspected as a way for ice to stay trapped on the Moon for billions of years.

A thermal mapping instrument showed that permanently shadowed regions within deep polar craters are as cold as 35o Kelvin (-238o Celsius).

Project scientist Richard Vondrak said that they are the coldest spots in the Solar System – even colder than the surface of Pluto.

Variations in the flux of neutrons suggests variability in water content among craters.

But, the surprise comes from a different instrument on LRO, which counts slow-moving neutrons as a way of measuring hydrogen abundance in the top metre or so of the surface.

This hydrogen is often interpreted as a proxy for water ice, although it could also be molecular hydrogen or hydrogen trapped in other molecules.

The LRO instrument has already found a significant excess of hydrogen at the poles.

But, with added resolution, it is seeing surprising variability within the polar regions. Some of the craters appear enriched in hydrogen. Others are not.

Stranger still, some areas outside the crater walls, which were thought to get too hot for water to linger, show an excess of hydrogen.

Vondrak said this shows that the water could have arrived more recently, or that it can persist if buried as impacts till the lunar soil.

If the LCROSS impact spews up ice, it will eliminate the last vestiges of doubt about water on the Moon.

It could also start a new hunt: to find a record of impact events, such as water-rich comet strikes, that put the ice there in the first place. (ANI)

New evidence points towards water on Moon

London, September 19 (ANI): Two separate lunar missions have found evidence which indicates that the polar regions of the moon are chock full of water-altered minerals.

According to a report in Nature News, early results from NASA’s Lunar Reconnaissance Orbiter (LRO), launched on June 18, are offering a wide array of watery signals.

The Moon, in fact, has water in all sorts of places: not just locked up in minerals, but scattered throughout the broken-up surface, and, potentially, in blocks or sheets of ice at depth.

“We are on the verge of a renaissance in our thinking about the poles of the Moon, including how water ice gets there,” said Anthony Colaprete, principal investigator for the Lunar Crater Observation and Sensing Satellite (LCROSS), which on October 9, will slam into a polar crater with the intention of ploughing up a plume of water ice for many telescopic eyes to see.

The initial LRO results confirm what was long suspected as a way for ice to stay trapped on the Moon for billions of years.

A thermal mapping instrument showed that permanently shadowed regions within deep polar craters are as cold as 35o Kelvin (-238o Celsius).

Project scientist Richard Vondrak said that they are the coldest spots in the Solar System – even colder than the surface of Pluto.

Variations in the flux of neutrons suggests variability in water content among craters.

But, the surprise comes from a different instrument on LRO, which counts slow-moving neutrons as a way of measuring hydrogen abundance in the top metre or so of the surface.

This hydrogen is often interpreted as a proxy for water ice, although it could also be molecular hydrogen or hydrogen trapped in other molecules.

The LRO instrument has already found a significant excess of hydrogen at the poles.

But, with added resolution, it is seeing surprising variability within the polar regions. Some of the craters appear enriched in hydrogen. Others are not.

Stranger still, some areas outside the crater walls, which were thought to get too hot for water to linger, show an excess of hydrogen.

Vondrak said this shows that the water could have arrived more recently, or that it can persist if buried as impacts till the lunar soil.

If the LCROSS impact spews up ice, it will eliminate the last vestiges of doubt about water on the Moon.

It could also start a new hunt: to find a record of impact events, such as water-rich comet strikes, that put the ice there in the first place. (ANI)

Boffins create first prosthetic bone made from wood

London, June 24 (ANI): The first prosthetic bone material that is made from wood has been developed by Italian scientists.

The researchers transformed the building blocks of wood into the material from which bone is made.

The team first heated the wood to remove water content and proteins, leaving behind a carbon skeleton of the wood’s architecture. They then caused the template to react with carbon dioxide and oxygen, turning it into calcium carbonate, reports The Times.

The result is a white material that is chemically indistinguishable from bone but which has the underlying structure of wood.

According to the study, which has been published in the Journal of Materials Chemistry, the pores and channels present in the material mean that it could be more easily integrated into the body than synthetic bone replacements made from materials such as titanium.

The pores would allow cells to pass in and out of the material, as happens in normal bones.

In the first instance, the material is likely to be most suitable for filling gaps left after the removal of bone tumours or after serious fractures.

The material could find applications outside the clinic, according to Anna Tampieri, of the Institute of Science and Technology for Ceramics in Faenza, who led the study. (ANI)

Coming soon, a sureshot way to treat constipation

Washington, April 9 (ANI): Suffering from constipation? Well, help is on the way – a team of researchers has identified a potential drug target to make it a lot easier to go to the bathroom, especially when all other methods fail.

They have discovered a group of nerve ending receptors, which, when stimulated, causes the bowels to pass waste, and the specific receptor needed to activate bowel clearance.

Also, they tested chemicals that work with those receptors, providing a blueprint for the development of new laxatives.

“We hope that the receptor identified by our study would be exploited more in the design of drugs to treat constipation,” said Bindu Chandrasekharan, a researcher from Emory University who was involved in the study.

The study involved two groups of mice, focusing on a type of receptor also present on human nerves in the gut (a type of adenosine receptor).

The first group of mice had normal adenosine receptors on these nerves and normal bowel movements. The second group of mice completely lacked these adenosine receptors and showed familiar signs of constipation.

The researchers started with simple experiments such as comparing the wet weight, dry weight, and water content in the stools of both groups.

The mice were also made to drink a dye not absorbed by the body to see how it passed or did not pass.

In addition, the researchers used microscopic lasers to separate the nerve cells from the bowel to determine exactly where the receptors are located. Then they tested various chemicals that can activate or inhibit the nerve receptors.

Gerald Weissmann, M.D, Editor-in-Chief of The FASEB Journal, said: “Here’s why: First, we can look forward to a solution to what is sometimes a serious problem, especially infants and the elderly. Second, it’s the first definitive proof that these receptors, the adenosine receptors, control bowel function. This discovery promises to yield agents that will permit us to sit down and ease up in the middle of a busy day.”

The study has been published online in The FASEB Journal. (ANI)