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News articles about "Fossils"

Dust in the wind drove iron fertilization during ice age

Researchers from Princeton University and the Swiss Federal Institute of Technology in Zurich have confirmed that during the last ice age iron fertilization caused plankton to thrive in a region of the Southern Ocean The ... - Read More

Why did humans replace Neanderthals? Paleo diet didn't change, the climate did

Why were Neanderthals replaced by anatomically modern humans around 40 000 years ago One popular hypothesis states that a broader dietary spectrum of modern humans gave them a competitive advantage on Neanderthals Geochemical analyses of ... - Read More

Water cycle amplifies abrupt climate change

During the abrupt cooling at the onset of the so called Younger Dryas period 12680 years ago changes in the water cycle were the main drivers of widespread environmental change in western Europe Thus the ... - Read More

Scientists stitch up photosynthetic megacomplex

Proteins, Proteins, proteins
When sunlight strikes a photosynthesizing organism energy flashes between proteins just beneath its surface until it is trapped as separated electric charges Improbable as it may seem these tiny hits of energy eventually power the ... - Read More

Evidence of 3.5-billion-year-old bacterial ecosystems found in Australia

Ecosystems
Reconstructing the rise of life during the period of Earth's history when it first evolved is challenging Earth's oldest sedimentary rocks are not only rare but also almost always altered by hydrothermal and tectonic activity ... - Read More

Paleontologist presents origin of life theory

Earth, earth
It has baffled humans for millennia how did life begin on planet Earth Now new research from a Texas Tech University paleontologist suggests it may have rained from the skies and started in the bowels ... - Read More

Texas Tech Paleontologist Presents Origin of Life Theory

Released 10 29 2013 11 45 AM EDTSource Newsroom Texas Tech University more news from this source Oct 30 2013 It has baffled humans for millennia how did life begin on planet Earth Now new ... - Read More

Late Cretaceous Period was likely ice-free

Ice
For years scientists have thought that a continental ice sheet formed during the Late Cretaceous Period more than 90 million years ago when the climate was much warmer than it is today Now a University ... - Read More

Biochemists resurrect 'molecular fossils': Findings challenge assumptions about origins of life

Biochemists, Fossils
Before there was life on Earth there were molecules A primordial soup At some point a few specialized molecules began replicating This self replication scientists agree kick started a biochemical process that would lead to ... - Read More

Assumptions about origins of life challenged

Before there was life on Earth there were molecules A primordial soup At some point a few specialized molecules began replicating This self replication scientists agree kick started a biochemical process that would lead to ... - Read More

Nuke test radiation can fight poachers who kill elephants, rhinos, hippos

Radiation, Radiation, Radiation
University of Utah researchers developed a new weapon to fight poachers who kill elephants hippos rhinos and other wildlife By measuring radioactive carbon 14 deposited in tusks and teeth by open air nuclear bomb tests ... - Read More

Fossil kangaroo teeth reveal mosaic of Pliocene ecosystems in Queensland

The teeth of a kangaroo and other extinct marsupials reveal that southeastern Queensland 2.5 5 million years ago was a mosaic of tropical forests wetlands and grasslands and much less arid than previously thought The ... - Read More

Bridge species drive tropical engine of biodiversity

Fossil
Although scientists have known since the middle of the 19th century that the tropics are teeming with species while the poles harbor relatively few the origin of the most dramatic and pervasive biodiversity on Earth ... - Read More

Three-billion-year-old microfossils include plankton

Carbon, carbon
Spindle shaped inclusions in three billion year old rocks are microfossils of plankton that probably inhabited the oceans around the globe during that time according to an international team of researchers It is surprising to ... - Read More

Diet likely changed game for some hominids 3.5 million years ago

Carbon, carbon
A new look at the diets of ancient African hominids shows a game changer occurred about 3.5 million years ago when some members added grasses or sedges to their menus according to a new study ... - Read More

The Black Sea is a goldmine of ancient genetic data

sea
When Woods Hole Oceanographic Institution WHOI marine paleoecologist Marco Coolen was mining through vast amounts of genetic data from the Black Sea sediment record he was amazed about the variety of past plankton species that ... - Read More

First snapshot of organisms eating each other: Feast clue to smell of ancient Earth

Smell
Tiny 1 900 million year old fossils from rocks around Lake Superior Canada give the first ever snapshot of organisms eating each other and suggest what the ancient Earth would have smelled like Share This ... - Read More

Rethinking early atmospheric oxygen: Possibility of more dynamic biological oxygen cycle on early Earth than previously supposed

Oxygen, Oxygen, oxygen
A research team of biogeochemists at the University of California Riverside has provided a new view on the relationship between the earliest accumulation of oxygen in the atmosphere arguably the most important biological event in ... - Read More

Geochemical method finds links between terrestrial climate and atmospheric carbon dioxide

Atmospheric
Nearly 34 million years ago   Earth underwent a transformation from a warm high carbon dioxide greenhouse state to a lower CO2 variable climate similar to the modern icehouse world Massive ice sheets grew across ... - Read More

Hydrogen from methane without CO2 emissions?

The production of hydrogen from methane without carbon dioxide emissions is the objective of a project in which KIT is a major partner At KALLA the Karlsruhe Liquid metal Laboratory researchers are setting up a ... - Read More
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