Mon, Feb 27, 2017 | updated 12:42 AM IST

Here is what might have caused the death of land-living dinosaurs?

Updated: Jan 14, 2017 08:22 IST

New Delhi [India], Jan. 13 (ANI): New computer simulations have shown that tiny droplets of sulphuric acid resulted in long-lasting cooling, which was a likely contributor to the death of land-living dinosaurs.

An additional kill mechanism might have been a vigorous mixing of the oceans, caused by the surface cooling, severely disturbing marine ecosystems.

Researchers from Potsdam Institute for Climate Impact Research in Germany reconstructed how tiny droplets of sulphuric acid formed high up in the air after the well-known impact of a large asteroid and blocking the sunlight for several years, had a profound influence on life on Earth.

Previous theories focused on the shorter-lived dust ejected by the impact.

"The big chill following the impact of the asteroid that formed the Chicxulub crater in Mexico is a turning point in Earth history," said lead study author Julia Brugger.

The study appears in the Geophysical Research Letters.

"We can now contribute new insights for understanding the much debated ultimate cause for the demise of the dinosaurs at the end of the Cretaceous era," Brugger added.

The team used a specific kind of computer simulation normally applied in different contexts, a climate model coupling atmosphere, ocean and sea ice.

They build on research showing that sulphur- bearing gases that evaporated from the violent asteroid impact on our planet's surface were the main factor for blocking the sunlight and cooling down Earth.

"It became cold, I mean, really cold," said Brugger.

The dinosaurs were used to living in a lush climate.

After the asteroid's impact, the annual average temperature was below freezing point for about three years.

Evidently, the ice caps expanded. Even in the tropics, annual mean temperatures went from 27 degrees to mere five degrees.

"The long-term cooling caused by the sulphate aerosols was much more important for the mass extinction than the dust that stays in the atmosphere for only a relatively short time. It was also more important than local events like the extreme heat close to the impact, wildfires or tsunamis," explained co-author Georg Feulner.

It took the climate about 30 years to recover, the scientists found.

Surface waters cooled down, thereby becoming denser and hence heavier.

While these cooler water masses sank into the depths, warmer water from deeper ocean layers rose to the surface, carrying nutrients that likely led to massive blooms of algae, the scientists argue.

It is conceivable that these algal blooms produced toxic substances, further affecting life at the coasts.

Yet in any case, marine ecosystems were severely shaken up and this likely contributed to the extinction of species in the oceans, like the ammonites.

The dinosaurs, until then the masters of the Earth, made space for the rise of the mammals, and eventually humankind.

The study of Earth's past also shows that efforts to study future threats by asteroids have more than just academic interest. (ANI)

New clues found for nuclear waste cleanup

Updated: Feb 24, 2017 09:35 IST

Washington D.C. (USA), Feb. 24 (ANI): According to a study, the research being done on the chemistry of technetium-99 has boosted the understanding of the challenging nuclear waste and can lead to better cleanup methods.

Full Story >>

Washington D.C. [US], Feb. 24 (ANI): US researchers have suggested that specially trained dogs can be used to find wide-ranging species that are often threatened, sepecially cheetah in a region of Western Zambia.

Full Story >>

Washington D.C. [USA], Feb. 23(ANI): NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water.

Full Story >>

Noida (Uttar Pradesh) [India], Feb.22 (ANI): Germany's Alexander von Humboldt (AvH) Foundation has handed over equipment worth € 20, 000 to Amity University for accelerating research initiatives.

Full Story >>

Washington D.C. (USA), Feb 21 (ANI): The world's first battery to use only hydronium ions as the charge carrier has been been developed by scientists.

Full Story >>

Washington D.C. (USA), Feb. 21 (ANI): According to a new study, Carnegie's Stephen Elardo and Anat Shahar shows that interactions between iron and nickel under the extreme pressures and temperatures similar to a planetary interior can help scientists understand the period in our Solar System's youth when planets were forming and their cores were created.

Full Story >>

Washington D.C. [USA], Feb. 18 (ANI): To boost breeding of endangered poultry breeds, Briton researchers have come up with gene-editing techniques for the rare breeds to use them as surrogates that cannot produce their own chicks.

Full Story >>

Meet 'Bernardbowen'- the new minor planet

Updated: Feb 18, 2017 07:00 IST

Washington D.C. [USA], Feb. 18 (ANI): In a major development, a team of scientists have officially named a minor planet as 'Bernardbowen' that sits in the asteroid belt between Mars and Jupiter.

Full Story >>

New York [USA], Feb. 17 (ANI): NASA has called on the world to help it in the search for the new ninth planet, as anyone from a kindergartener to a 95-year-old, can participate in their new project to find the not-yet-discovered celestial body.

Full Story >>

Washington D.C. [USA], Feb. 9 (ANI): To cut down the number of traffic fatalities, drive less!

Full Story >>

Washington D.C. [USA], Feb. 8 (ANI): According to an international team of astronomers led by researchers from University Of Cambridge, the Magellanic Clouds, the two largest satellite galaxies of the Milky Way, appear to be connected by a bridge stretching across 43,000 light years.

Full Story >>

Washington D.C. [USA], Jan. 25 (ANI): A team of researchers have discovered prehistoric wolf-sized otter fossils with a large head and a powerful jaw, weighing around 100 pounds, in China's Yunnan province.

Full Story >>

Washington D.C. [USA], Jan. 25 (ANI): A study finds that early identification of hearing loss in newborn due to a disease or physical abnormality by birth may help them in better language outcomes as they grow.

Full Story >>

Chennai [India], Jan.14 (ANI-Businesswire India): While "Jallikattu" seems to be the trending topic of discussion in Tamil Nadu at the moment, a silent revolution envisioned by youth icon and late Former President of India, Dr. APJ Abdul Kalam has quietly gained momentum. Ignite-India is a nation-wide innovation platform for student innovators and young entrepreneurs in high schools and colleges. Founded by International swimmer Agnishwar Jayaprakash in 2014, the organization has designed & hosted 96 Regional Innovation Conferences and 3 National Innovation Conferences across 36 cities in India where students competed to showcased their innovative creations. These innovations were judged based on the practicality, creativity & sustainability by technical experts from diverse fields.

Full Story >>

New human organ in digestive system discovered

Updated: Jan 05, 2017 06:27 IST

New Delhi [India], Jan. 5 (ANI): Scientists have discovered what they are calling a new human organ that exists in the digestive system.

Full Story >>

Washington D.C. [USA], January 4 (ANI): Songbirds divorce, pack up and leave and miss their best chances for successful reproduction, courtesy suburban development.

Full Story >>

How do conch shells have such huge variety?

Updated: Jan 04, 2017 05:52 IST

Washington D.C. [USA], January 4 (ANI): Conch shells and its varied shapes and size have always been something that has captivated the eyes of collectors.

Full Story >>

Washington D.C. [USA], Dec. 31 (ANI): A new study finds that despite English being considered the common language of global science, over 30 percent of new scientific reports are published other languages due to which many major findings have been overlooked.

Full Story >>

New Delhi [India], Dec. 29 (ANI): Wake up to a chilly morning and sense a bit of rain!

Full Story >>