Science

Earth atmosphere contained oxygen for complex life nearly 1.2bn years ago: study

Geologists studying rocks in Scotland have claimed that the atmosphere of the earth contained enough oxygen for the development of complex life nearly 1.2 billion years ago- 400 million years earlier than previously believed.

Rocks studied by geologists retained signs of bacterial activity which occur only when there is abundant atmospheric oxygen.

The researchers told the journal Nature that the microbes' behaviour was seen 400 million years further back in time than previously thought.

Low electric current can improve person’s mathematical skills: research

Stimulating the brain with a very low electric current can improve a person's arithmetic skills for up to six months, British researchers claimed.

As per estimates, one-fifth of population has trouble working with numbers. But, a fresh research carried out by British neuroscientists proved that that a low and risk-free electrical stimulation delivered to the cranium through electrodes could help improve a person’s mathematical skills.

Social factors play vital role in dolphins’ life

Like humans, bottlenose dolphins also get influenced by social factors, a study of dolphins at Shark Bay in Western Australia revealed.

Researchers found that those dolphins who live in the company of experienced and good mothers are themselves become successful mothers.

Celine Frere, who led the study, said that apart from genes, social factors also played vital role in the reproductive fitness of the female dolphins.

Research: Global extinction threat looms large among vertebrate species

According to a new research, nearly one-fifth of the world's vertebrates and almost one-third of all sharks and rays are currently facing the threat of extinction.

The research, representing the first time that the rate of decline among vertebrate species had been quantified on a global scale, underscores that the destruction of natural habitats largely responsible for the "alarming" decline in the numbers of mammals, birds, amphibians, reptiles and fish in the world.

'X' marks smash amongst asteroids

Astronomers now are speaking of the snapshots which have come alive after an asteroid collision in space.

The asteroid appeared to resemble like a comet which the scientists dubbed as object stating the P/2010 A2 in the asteroid belt in January using the Rosetta spacecraft.

A close observation on the same indicates of more peculiar images coming out of Hubble Space Telescope forming in form of bizarre X-shape nucleus, for instance.

Jessica Agarwal, a European Space Agency astronomer in the Netherlands said, "When I saw the Hubble image I knew it was something special."

Researchers to Study Effect of Camels on Global Warming

On Tuesday, the Northern Territory News brought out that the scientists in central Australia will study camels, so as to know the effect of animals' flatulence on global warming.

The animals will be assessed for levels of greenhouse gas emissions generated by them. Also, it would be evaluated if the decomposing bodies of dead camels lead to more pollution.

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