Science News

This is how brain performs 'mental time travel'

This is how brain performs 'mental time travel'Washington, Feb 18 - Scientists have explained how our brain performs, what neuroscientists have termed as "mental time travel."

It refers to the recollection of memories, so rich in detail regarding the time and place of an original experience, that it is much like traveling through time.

Now, 'second skin' that prevents dangerous sores in amputees

second skinLondon, April 15 : Scientists have developed a " second skin", which is a new type of pressure sensor , that prevents amputees from developing sores from rubbing against their artificial limbs.

The sensors, developed by Southampton University in partnership with the prosthetics firm Blatchford may be also be used for wheelchair-users and those confined to bed, if the work is successful, the BBC reported.


Mechanism behind breast cancer's spread revealed

breast cancerWashington, Dec 27 - Scientists have discovered that low oxygen conditions, which often persist inside tumours, are sufficient to initiate a molecular chain of events that transforms breast cancer cells from being rigid and stationery to mobile and invasive.

Male fruit flies identify eligible females by smell

Male fruit flies identify eligible females by smellLondon, Aug 21 : Young male fruit flies learn the smell of a receptive female to avoid wasting their efforts hunting for a mate, a new study has revealed.

Promiscuous male flies initially court all females, but are rejected by those who have already mated, the BBC reported.

It is clear that the flies eventually learn to spot mated females, but just how they do has remained a mystery.

Scientists map global trade endangering wildlife

Scientists map global trade endangering wildlifeSydney, June 11 : Your coffee and cocoa drinking and use of wood products every day puts 30 percent of world's under-threat species at still greater risk because of loss of biodiversity, a study has pointed out.

The study is the first to map consumer product supply chains and link them to the global register of endangered species. The findings could help improve international-trade regulations, the journal Nature reported.


Scientists reveal how superbug turns killer

Scientists reveal how superbug turns killerSydney, Oct 17 - Researchers have revealed how a common hospital pathogen turns into a deadly superbug, killing more and more patients worldwide.

A mutation in the Clostridium difficile causes potentially dangerous diarrhoea among indoor patients undergoing antibiotic therapy, according to Dena Lyras and Glen Carter from the Monash University School of Biomedical Sciences, who led the study.


Mineral-rich rice to ease world's nutritional disorder

Mineral-rich rice to ease world's nutritional disorderSydney, Sep 12 : White rice is unable to meet daily nutritional requirements because it has lower levels of iron, zinc and pro-vitamin A. Scientists have now engineered iron-rich rice to overcome this deficit.

Iron deficiency is the most widespread nutritional disorder in the world and affects more than two billion people or a third of the global population, according to the World Health Organisation (WHO).


Happiness? It's all in your genes

Happiness? It's all in your genesLondon, Sep 11 : Scientists believe they have identified the happy gene that makes us look on the bright side of life.

The researchers have found evidence that part of our DNA makes us either naturally positive or negative, reports express. co. uk.

The Essex University study looked at DNA samples of 100 volunteers and tested their responses to highly emotive images, using revolutionary computer therapy.


Scientists peer into real time brain cell activity

Scientists peer into real time brain cell activityWashington, May 31 : Scientists, for the first time, peered into real time brain cell activity that underlay memory formation.

Researchers reproduced the brain's complex electrical impulses onto models made of living brain cells that provide an unprecedented view of the neuron (nerve cell) activity behind memory formation.


Scientists succeed in 'decoding' brainwaves

Scientists succeed in 'decoding' brainwavesLondon, May 18 : One of the most enduring sci-fi fantasies -- a 'mind-reading machine' that can display mental images -- is now a step closer to reality after scientists were able to decode brain signals relating to vision.

Researchers from the University of Glasgow showed volunteers images of people's faces displaying different emotions such as happiness, fear and surprise.


German drug halts Alzheimer's disease in mice

German drug halts Alzheimer's disease in miceGoettingen (Germany), Nov 6 - Scientists in Germany said they had developed a drug that halts the progress of Alzheimer's disease in mice and hope to begin tests on humans in two years' time.

The treatment, which they described as immunisation, employs a new antibody to stop brain degeneration.

Our eyes evolved to see dark world

Our eyes evolved to see dark worldMelbourne, Sept 22 : New research has revealed that human eyes evolved to see a world that contains more darkness than light.

In humans, cells that respond to a dark spot on a light background are called ''OFF'' cells, while their counterparts are called ''ON'' cells.

And the closer clustering of OFF cells as compared to that of ON cells allocates more neural processing to dark regions of an image.

How honeycomb clouds exhibit self-organization

How honeycomb clouds exhibit self-organizationLondon, Aug 21 : Researchers have shown how honeycomb clouds disappear in one place and reappear in another.

Researchers claimed that rain causes air to move vertically, which breaks down and builds up cloud walls.

The air movement forms patterns in low clouds that remain cohesive structures even while appearing to shift about the sky, due to a principle called self-organization.


Scientists discover infection-inducing mechanism in bacteria

London, May 19 : A new study has shown that bacteria have a surprising mechanism to transfer virulent genes causing infections.

The research describes an unprecedented evolutionary adaptation and could contribute to finding new ways of treating and preventing bacterial infections.


Climate change caused mass extinction of mammals 50,000 years ago

Washington, May 19 : Climate change played a major role in causing mass extinction of mammals in the late quaternary era, 50,000 years ago, an international team of scientists have discovered.

Their study takes a new approach to this hotly debated topic by using global data modelling to build continental ‘climate footprints.’


Greenland rapidly rising due to ice melting

London, May 19 : Scientists are astounded as rapid ice meltdown in Greenland is causing the land to rise quickly.

Moving glaciers in Greenland form dense icecaps up to 2 km thick that covers most of the island. These icecaps also press down hard on the land beneath, lowering its elevation.

Scientists from the University of Miami have now found that these icecaps are melting, causing some coastal lands to rise by nearly one inch per year.


Climate change adversely impacts populations of trout, salmon

Washington, May 18 : Climate change is adversely affecting lives of trout and salmon, a new research claims.

Researchers from Cardiff University studied populations of young salmon and trout in the River Wye in Wales, traditionally one of the UK''s best angling rivers.


New ''tree of life'' constructed for one of the largest groups of bacteria

Washington, May 18 : Researchers at the Virginia Bioinformatics Institute (VBI) at Virginia Tech have created a new "tree of life" for the gamma-proteobacteria— a large group of medically and scientifically important bacteria that includes Escherichia coli, Salmonella typhimurium, and other disease-causing organisms.

By building powerful phylogenetic trees, scientists can quickly identify similarities and differences between the make-up of many different organisms.


New clue to explain our existence

New York, May 18 : Scientists say they have come across a clue that could help explain why the universe is comprised of matter and not antimatter.

According to the researchers, arriving at that answer could reveal why we even exist.

The Fermi National Accelerator Laboratory researchers say collisions of protons and anti-protons produce pairs of particles called muons more frequently than they produce anti-muons.


LHC to soon search for new sub-atomic particles, says physicist

London, May 18 : The Large Hadron Collider (LHC) could start its search for new sub-atomic particles, says a leading physicist.

By the end of summer, the LHC could become sensitive enough to probe a hitherto unexplored domain in particle physics, if commissioning work goes well.

And the first candidates for discovery are two boson particles that have been predicted to exist, reports The BBC.


Bat fellatio study prompts sexual harassment row

London, May 18 : An academic at the University College Cork in Ireland found himself at the centre of a sexual harassment scandal after he discussed a scientific paper, titled ‘Fellatio in fruit bats prolongs copulation time’ with a female colleague.

Dylan Evans, a psychologist at the university''s school of medicine, has been saddled with a two-year period of intensive monitoring and counselling after discussing the paper with a colleague.


Ancient mass extinction of fish paved way for modern vertebrates

Washington, May 18 : A new study says that modern-day lizards, snakes, frogs and mammals - including humans - owe their existence to a mass extinction of fish 360 million years ago.

According to the study, the prehistoric fish extinction hit the reset button on Earth''s life, setting the stage for modern vertebrate biodiversity.

The mass extinction scrambled the species pool near the time at which the first vertebrates crawled from water towards land.


New method may help solve lithium battery safety problems

London, May 17 : A simple, accurate way of `seeing' chemistry in action inside a lithium-ion battery has been developed by scientists at Cambridge.

By helping them understand how these batteries behave under different conditions, the new method - which involves Nuclear Magnetic Resonance (NMR) spectroscopy - could help researchers solve the fire safety problems that have dogged the development of these batteries.


Baby corals use sound cues to reach home

Washington, May 15 : Coral larvae, just like their older counterparts, can use sound as a cue to find coral reefs, found researchers.

Many years ago, Dr Steve Simpson, Senior Researcher in the University of Bristol''s School of Biological Sciences discovered this behaviour in baby reef fish.


Fat lipped fish evolving at record speed

London, May 15 : In what could be called one of the fastest evolutionary change in an organism, fish in a remote crater lake in Nicaragua are developing a new physical feature— very fat lips.

It has taken the lake cichlids just 100 generations and as many years to evolve this feature.

Most estimates of how fast species evolve new features are based on models, which generally indicate that it could take up to 10,000 generations.