Latest Breathing gases Stories
Analysis of a rock type found only in the world's oldest oceans has shed new light on how large animals first got a foothold on the Earth.A scientific team led by Professor Robert Frei at the University of Copenhagen in Denmark, and including scientists from Newcastle University, UK, and universities in Uruguay and Southern Denmark, have for the first time managed to plot the rise and fall of oxygen levels in the Earth's atmosphere over the last 3.8 billion years.By analyzing the isotopes of...
Life got bigger in two, million-fold leaps, scientists sayExtremes are exciting. Does anyone really think dinosaurs would capture our imagination the way they do if they hadn't been so huge? You don't see natural history museums vying for fossil skeletons of prehistoric rodents. It's the Tyrannosaurus rex fossils they salivate and squabble over. And would the Hollywood glitterati cart around those little teacup pups if they weren't so dang tiny and cute? Not likely.Earth's creatures come in...
CHERRY HILL, N.J., Oct. 29 /PRNewswire/ -- TriMix Laboratories LLC today announced a major enhancement to their flagship product TriMix-gel(TM). TriMix-gel(TM) uses the ED gel(TM) (pat. pend.) applicator system. The applicator has been fitted with an adapter to make the use of TriMix-gel(TM) even easier for the patient. The adapter will be included for shipment to patients immediately. The new adapter is featured on the website http://www.trimixgel.com/. A video there includes a...
TriMix Laboratories has entered into an agreement with American Pharmacy Solutions as the exclusive pharmacy for prescription fulfillment of TriMix gel. TriMix gel has been prescribed by doctors as a first line and secondary treatment for erectile dysfunction (ED). American Pharmacy Solutions (APS) is a licensed compounding pharmacy which makes TriMix gel medicine for each individual patient in response to a prescription from a physician. TriMix gel is a gel-based treatment which has been...
Stanford, CAÂ -- A startling discovery by scientists at the Carnegie Institution puts a new twist on photosynthesis, arguably the most important biological process on Earth. Photosynthesis by plants, algae, and some bacteria supports nearly all living things by producing food from sunlight, and in the process these organisms release oxygen and absorb carbon dioxide. But two studies by Arthur Grossman and colleagues*+ reported in Biochimica et Biophysica Acta and Limnology and Oceanography...
NASA-funded astrobiologists have found evidence of oxygen present in Earth's atmosphere earlier than previously known, pushing back the timeline for the rise of oxygen in the atmosphere. Two teams of researchers report that traces of oxygen appeared in Earth's atmosphere from 50 to 100 million years before what is known as the Great Oxidation Event. This event happened between 2.3 and 2.4 billion years ago, when many scientists think atmospheric oxygen increased significantly from the...
WASHINGTON -- Oxygen, key to life on Earth today, began to appear on the planet millions of years earlier than scientists had thought, new research indicates.An analysis of a deep rock core from Australia indicates the presence of at least some oxygen 50 million to 100 million years before the great change when the life-giving element began rising to today's levels, according to two papers appearing in Friday's edition of the journal Science.Previously, the earliest indications of oxygen had...
University Park, Pa. -- A switch from predominantly undersea volcanoes to a mix of undersea and terrestrial ones shifted the Earth's atmosphere from devoid of oxygen to one with free oxygen, according to geologists."The rise of oxygen allowed for the evolution of complex oxygen-breathing life forms," said Lee R. Kump, professor of geoscience, Penn State.Before 2.5 billion years ago, the Earth's atmosphere lacked oxygen. However, biomarkers in rocks 200 million years older than that...
Two and a half billion years ago, when our evolutionary ancestors were little more than a twinkle in a bacterium's plasma membrane, the process known as photosynthesis suddenly gained the ability to release molecular oxygen into Earth's atmosphere, causing one of the largest environmental changes in the history of our planet. The organisms assumed responsible were the cyanobacteria, which are known to have evolved the ability to turn water, carbon dioxide, and sunlight into oxygen and sugar,...
LONDON (Reuters) - Scientists may have to rethink accepted theories of how the prehistoric earth's atmosphere developed after new discoveries in ancient sulphur raised serious questions, researchers said on Wednesday.Up to now it has been generally accepted that the earth's atmosphere was devoid of oxygen for some 80 percent of its existence."The popular model is that there was little oxygen in the earth's atmosphere before about 2.4 billion years ago," said Hiroshi Ohmoto of...
