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News articles about "Earth"

Rain as acidic as lemon juice may have contributed to ancient mass extinction

Lemon juice
Rain as acidic as undiluted lemon juice may have played a part in killing off plants and organisms around the world during the most severe mass extinction in Earth's history About 252 million years ago ... - Read More

Ancient minerals: Which gave rise to life?

Minerals, Minerals
Life originated as a result of natural processes that exploited early Earth's raw materials Scientific models of life's origins almost always look to minerals for such essential tasks as the synthesis of life's molecular building ... - Read More

Inner workings of bacterial black box caught on time-lapse video

Time
Cyanobacteria found in just about every ecosystem on Earth are one of the few bacteria that can create their own energy through photosynthesis and fix carbon from carbon dioxide molecules and convert it into fuel ... - Read More

Unexpected properties of methane-producing microbe

Properties
For 40 years scientists thought they understood how certain bacteria work together to anaerobically digest biomass to produce methane gas important in bioenergy and the major source of greenhouse gas But now microbiologists in Derek ... - Read More

Safety in numbers? Not so for corals

Ocean, Ocean
Traditionally it was assumed that corals do not face a risk of extinction unless they become very rare or have a very restricted range A team of scientists from the University of Hawaii Manoa UHM ... - Read More

Oxygen, phosphorus and early life on Earth

Phosphorus, phosphorus, Earth, earth
Two billion years ago Earth system was recovering from perhaps the single most profound modification of its surface environments the oxygenation of the atmosphere and oceans This led to a series of major changes in ... - Read More

Amber provides new insights into the evolution of Earth's atmosphere: Low oxygen levels for dinosaurs

Oxygen
An international team of researchers led by Ralf Tappert University of Innsbruck reconstructed the composition of Earth's atmosphere of the last 220 million years by analyzing modern and fossil plant resins The results suggest that ... - Read More

Evidence found for granite on Mars: Red Planet more more geologically complex than thought

Complex, Granite, Mars
Researchers now have stronger evidence of granite on Mars and a new theory for how the granite an igneous rock common on Earth could have formed there according to a new study The findings suggest ... - Read More

Spintronics: Nano magnets arise at 2-D boundaries

Magnets, Nano
When you squeeze atoms you don't get atom juice You get magnets According to a new theory by Rice University scientists imperfections in certain two dimensional materials create the conditions by which nanoscale magnetic fields ... - Read More

Warming since 1950s partly caused by El Niño?

Ocean, Ocean
A natural shift to stronger warm El Niño events in the Pacific Ocean might be responsible for a substantial portion of the global warming recorded during the past 50 years according to new research at ... - Read More

Putting a new spin on tokamak disruptions

Plasma
In the quest for fusion energy on earth researchers use magnetic fields to insulate hot plasma from the walls of the chamber to maintain the reaction and prevent damage to interior surfaces In the tokamak ... - Read More

Warming since 1950s partly caused by El Niño

Ocean, Ocean
A natural shift to stronger warm El Niño events in the Pacific Ocean might be responsible for a substantial portion of the global warming recorded during the past 50 years according to new research at ... - Read More

New generation of micro sensors for monitoring ocean acidification

Ocean, Ocean
The first step in developing a cost effective micro sensor for long term monitoring of ocean acidification has been achieved by a team of scientists and engineers The new technology that will measure pH levels ... - Read More

Microbes swim to hydrogen gas

Gas
Scientists have long believed that microorganisms that produce methane swim toward the hydrogen gas they need to stay alive but it has been too hard to prove in the lab Montana State University researchers have ... - Read More

Methane-munching microorganisms meddle with metals

Metals, Microorganisms
On the continental margins where the seafloor drops hundreds of meters below the water's surface low temperatures and high pressure lock methane inside ice crystals Called methane hydrates these crystals are a potential energy source ... - Read More

Rare new microbe found in two spacecraft clean rooms

NASA
A rare recently discovered microbe that survives on very little to eat has been found in two places on Earth spacecraft clean rooms in Florida and South America Microbiologists often do thorough surveys of bacteria ... - Read More

Floods didn't provide nitrogen 'fix' for earliest crops in frigid north

crops
Floods didn't make floodplains fertile during the dawn of human agriculture in Earth's far north because the waters were virtually devoid of nitrogen unlike other areas of the globe scientists have studied Instead the hardy ... - Read More

X-rays reveal inner structure of Earth's ancient magma ocean

Ocean, X-Rays, Structure, X-rays, Structure, Earth, Ocean, earth
Using the world's most brilliant X ray source scientists have for the first time peered into molten magma at conditions of the deep Earth mantle The analysis at DESY's light source PETRA III revealed that ... - Read More

RNA controls splicing during gene expression, further evidence of 'RNA world' origin in modern life

RNA, RNA, RNA, RNA, Gene, RNA, Gene, RNA
RNA is the key functional component of spliceosomes molecular machines that control how genes are expressed report scientists from the University of Chicago online Nov 6 in Nature The discovery establishes that RNA not protein ... - Read More

Determining the quantum geometry of a crystal

Crystal
Physicists have succeeded in measuring geometric properties of energy bands in light crystals Geometrical phases occur in many places in nature One of the simplest examples is the Foucault pendulum a tall pendulum free to ... - Read More
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