Science Current Events | Science News | Brightsurf.com
 

Oxygen Isotope Current Events | Oxygen Isotope News

Page 1 of 23 | 571 Results
Previous0102030405060708091011   Next   
Sort By: Page Views | Date
Sulfur signature changes thoughts on atmospheric oxygen
Ancient sediments that once resided on a lake bed and the ocean floor show sulfur isotope ratios unlike those found in other samples from the same time, calling into question accepted ideas about when the Earth's atmosphere began to contain oxygen.   view more (2006-08-24)

Cooling Off Periods
Research by a team of Cambridge scientists has provided new clues about the first dramatic cooling of the Earth's climate 34 million years ago. The team, based at the University of Cambridge's Department of Earth Sciences said that ocean temperature drops were apparently not responsible for the... view more (2000-01-12)

Scripps/UCSD geophysicist among international team finding evidence of first plate tectonics
Identification of the oldest preserved pieces of Earth's crust in southern Greenland has provided evidence of active plate tectonics as early as 3.8 billion years ago, according to a report by an international team of geoscientists in the March 23 edition of Science magazine.   view more (2007-03-23)

New isotope molecule may add to Venus' greenhouse effect
Planetary scientists on both sides of the Atlantic have tracked down a rare molecule in the atmospheres of both Mars and Venus. The molecule, an exotic form of carbon dioxide, could affect the way the greenhouse mechanism works on Venus.   view more (2007-10-11)

Oxygen increase caused mammals to triumph, researchers say
The first, high resolution continuous record of oxygen concentration in the earth's atmosphere shows that a sharp rise in oxygen about 50 million years ago gave mammals the evolutionary boost they needed to dominate the planet.   view more (2005-09-30)

Radioactive crystals help identify and date ore deposits
Reddish-brown crystals of a radioactive mineral called monazite can act as microscopic clocks that allow geologists to date rock formations that have been altered by the action of high-temperature fluids, a process that frequently leads to the formation of rich ore deposits.   view more (2006-08-01)

Drinking water in Gaza Strip contaminated with high levels of nitrate
Palestinian and German scientists have recommended to the authorities in the Gaza Strip that they take immediate measures to combat excessive nitrate levels in the drinking water.   view more (2008-08-15)

Scientists discover cheap and environmentally friendly way to dispose of waste from nuclear power plants
Scientists from the University of Strathclyde, collaborating with an international team from Imperial College, Rutherford Appleton Laboratory(RAL), ITU (Karlsruhe) and the University of Jena, have successfully turned the radioactive isotope Iodine-129, a major waste product in the nuclear power... view more (2003-08-13)

Nuclear physicists examine oxygen's limits
Physicists at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University have made a unique measurement of an exotic oxygen nucleus, leading scientists one step closer to deciphering the behavior of the element at its limits of existence.   view more (2007-09-14)

Cosmic dust in terrestrial ice
For the last 30,000 years, our planet has been hit by a constant rain of cosmic dust particles.   view more (2006-07-28)

WHEELS WITHIN WHEELS: RARE ORBITAL ANOMALY MAY HAVE CAUSED GLOBAL COOLING 23 MILLION YEARS AGO
A rare coincidence of orbital cycles may have caused sudden global cooling 23 million years (Ma) ago, according to scientists, who used high resolution records and new techniques that allow astronomical calibration to be extended much further back in time. The late Oligocene to early Miocene Earth... view more (2001-06-21)

Friend or foe? - Viennese chemists optimise analysis of bones found at 7,000-year-old battlefield
Precise determination of strontium in bone material now makes it possible to distinguish between friend and foe on neolithic battlefields. A team of researchers at the University of Natural Resources and Applied Life Sciences, Vienna, has succeeded in using this sophisticated method to analyse... view more (2003-07-07)

Ancient Human Occupation of Britain
The University of Bradford's Department of Archaeological Sciences is taking part in a five-year study looking at when people first arrived in Britain, and the factors that led to their survival or local extinction.   view more (2003-03-20)

Oxygen treatment for severe asthma could save lives
Asthmatic patients are still dying during severe attacks, yet making oxygen available in every general practice to treat patients with a life threatening asthma attack could save lives, concludes a study in this week's BMJ. The authors urge the British Thoracic Society to review this issue when it... view more (2001-07-11)

Frozen methane chunks not responsible for abrupt increases in atmospheric methane
Icy chunks of frozen methane and water are not responsible for the periodic increases in atmospheric methane recorded in Greenland ice cores.   view more (2006-02-10)

Oxygen Treatment - New guidelines for use inside and outside the home
Oxygen therapy has long been recognised as helping some patients with COPD live longer, and it is estimated that around 18,000 patients benefit from the treatment each year in the UK.   view more (1999-07-23)

Antarctic snow inaccurate temperature archive
According to Dutch researcher Michiel Helsen, annual and seasonal temperature fluctuations are not accurately recorded in the composition of the snow of Antarctica. His research into the isotopic composition of the Antarctic snow has exposed the complexity of climate reconstructions.   view more (2006-02-16)

Made-to-order isotopes hold promise on science's frontier
Designer labels have a lot of cachet - a principle that's equally true in fashion and physics.   view more (2008-05-09)

Toxic to aliens -- but key to health of planet
Scientists at the University of Leicester are using an ingredient found in common shampoos to investigate how the oxygen content of the oceans has changed over geologically recent time.   view more (2008-06-19)

Tunguska catastrophe: Evidence of acid rain supports meteorite theory
The Tunguska event is regarded as one of the biggest natural disasters of modern times. On 30 June 1908 one or more explosions took place in the area close to the Tunguska River north of Lake Baikal. The explosion(s) flattened around 80 million trees over an area of more than 2000 square kilometres.   view more (2008-07-16)

Should People With Diabetes Sleep With The Lights On?
A research letter in this week's issue of THE LANCET suggests that night-time illumination could help prevent the onset of diabetic retinopathy, a condition which can result in severe visual impairment in people with diabetes. People with diabetes generally have impaired blood capillary function,... view more (2002-06-26)

Are hurricanes increasing? Ask a Georgia pine tree
Centuries of hurricane records have been discovered in the rings of southeastern US pine trees.   view more (2005-08-11)

Designer Isotopes Push the Frontier of Science
Designer labels have a lot of cachet, a principle that's equally true in fashion and physics.   view more (2008-05-12)

The beat goes on: a vertebrate heart that beats without oxygen
Scientists have discovered that the heart of a carp keeps beating when it is starved of oxygen for five days. "This is the first time that a vertebrate heart has been shown to survive such prolonged periods without oxygen and actually keep beating at the same rate as when oxygen is... view more (2004-04-02)

54 per cent of air passengers experience significant reductions in oxygen levels
More than half of air travellers find that their oxygen saturation drops to a level at which many hospital patients would be prescribed extra oxygen, according to a paper in the May issue of Anaesthesia.   view more (2005-04-25)
Page 1 of 23 | 571 Results
Previous0102030405060708091011   Next   
Sort By: Page Views | Date
© 2008 BrightSurf.com