Oxygen increase caused mammals to triumph, researchers say
...ientists believed that great fires burned over the earth about 10 million years ago, reducing the number of trees and, therefore, the amount of photosynthesis and oxygen....Study casts doubt on 'Snowball Earth' theory
...e lead author is Alison Olcott, a Ph.D. student of earth sciences in the USC College of Letters, Arts and Sciences. Geologists agree that prehistoric Earth was locked in a deep freeze during Precambrian times, about 750 to 600 million years ago. They disagree over the severity of the glaciation. "Snowball ...Secrets of the deep may hold key to life on other planets
...evolutionary history different to anything else on earth and even give us clues to how life could exist ono...full community can grow in just three years," said earth and environment lecturer Dr Crispin Little. "Vent communities are dependent on geochemical rather t...Can ancient rocks yield clues about catastrophes like Hurricane Katrina?
...arth's equator) coincided with perihelon (when the earth passes closest to the sun). It was only during this specific orbital configuration that freshwater run-off exceeded a certain threshold, finally to result in a rapid change to ocean anoxia. The findings, reported in Nature, the international weekly ...Recent earth and space science PhDs finding employment
...rns and demographics of 2003 PhD recipients in the earth and space sciences. Results from the survey show t...rded in solid Earth geology slightly declined. The earth and space science PhD survey shows some important issues about the interaction of students and advis......food supplies, the naked mole-rat siblings form an earth moving chain to pass dirt out a hole which later is covered to block out intruders. The most unusual room is the largest. It's where Momma naked mole-rat produces more babies as many as 12 at a time every couple of months. Here she is stoked by her ...History of Earth Sciences Society joins AGI
...tanding the development of theories and systems in earth sciences. We look forward to their participation i...nt of the discipline and the various ways in which earth sciences has been perceived throughout history. Their goal is to bridge the gap between the humaniti...Scientists crack 40-year-old DNA puzzle and point to 'hot soup' at the origin of life
...gests that the primordial soup where life began on earth was hot and not cold, as many scientists believe. In a paper published in the Journal of Molecular Evolution this week, researchers from the University of Bath describe a new theory which they believe could solve a puzzle that has baffled scientists ...A bug's life: Exceptional genomic stability yet rapid protein evolution in a carpenter ant mutualist
...atalysts throughout the 4 billion years of life on earth and have largely shaped the evolution of complex organisms." Symbiotic bacteria live in root nodules of leguminous plants, in gutless marine worms, in echinoderms such as starfishes and sea urchins, and in specialized cells of insects such as aphids ...Space matters: Estimating species diversity in the fossil record
Estimates for the number of living species on earth range from 3.5 million to over 30 million but only 1.9 million species have been classified and described. Estimating historical biodiversity from the fossil record is an even more daunting task. One tool ecologists - but not paleontologists - have t...AGI becomes founding partner of the International Year of Planet Earth
... world in an effort to increase publicawareness of earth sciences in society, and to coordinate key research efforts to address society'spressing issues, such as sustainable development. and responsible stewardship of the planet. Joining the other founding partners including AGI member society, The Geolog...From butterflies to freshwater supplies
...representing a broad range of fields, including earth sciences, education, biological sciences, economics and history. The grants are designed to encourage campus-wide collaborative research in areas such as environmental ethics and risk analysis, energy and global change, conservation sc...From sound analysis to nicotine addiction
...the earth's mantle is not only of interest to the earth scientists, in particular seismologists. The studies of carbonates are also of great interest for research into atmospheric carbon dioxide. (Coordinator: Prof. Bjrn Winkler, University of Frankfurt am Main) Ninety years ago "Ionic Fluids" were seen a...Atmosphere may cleanse itself better than previously thought
...ought," said Francisco, who is a professor of both earth and atmospheric sciences and chemistry in Purdue's College of Science. "We now have a better understanding of an atmospheric process that could be giving our pollution-weary lungs more breathing room." Francisco's research, which he performed at the ...Tsunami-damaged coral reefs should be left to recover naturally, say scientists
...ent available. And if builders are moving lots of earth around, they should do this in the dry season rather than the wet season to avoid sediment being washed into the sea."...As world warms, vegetation changes may influence extreme weather
...said Diffenbaugh, who is an assistant professor of earth and atmospheric sciences in Purdue's College of Sc...ole of changes in the way nutrients cycle from the earth into living things and back again." Land use change is a critical factor, Diffenbaugh said, consider...Microbes yield secrets of survival
... research team lead by Jill Banfield, professor of earth and planetary science and of environmental science, policy and management at UC Berkeley. Last year it became the first microbial community characterized at the genetic level through large-scale genome sequencing at the DOE Joint Genome Institute in ...Ireland announces its participation in international marine research program
...he deep biosphere, environmental change, and solid earth cycles. The JOIDES Resolution, the IODP riserless vessel, is operated by the JOI Alliance (Joint Oceanographic Institutions, Lamont-Doherty Earth Observatory, and Texas A&M University). Mission-specific operations are conducted by the European Consor...Whale bones and farm soil: Sequencing biodiversity
...05). Bacteria make up the greatest mass of life on earth by far and play a crucial role in the lives of all other organisms. But scientists have only touched the tip of the iceberg when it comes to identifying bacteria 99% of species cannot be grown by standard techniques in the laboratory. The emerging f......s and are the ecological basis for any lifeform on earth as these compounds limit the overall growth rate. The researchers discovered this type of bacteria for the first time a few years ago in the oxygen poor Black Sea and now also in the open ocean. This discovery has major consequences for our understan...