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Study on methane in deep-sea sediments shows small releases happen more often than thought（图）
深海沉积物 甲烷 化石生物 单细胞生物
2023/6/26
New research describes evidence that deep sea methane deposits change into gas more frequently than could be monitored previously and that a set of fossilized organisms has a unique ability to detect ...
Bacteria release more carbon from the ocean than previously thought（图）
Bacteria release carbon ocean previously thought
2021/4/23
A team led by University of Minnesota researchers has discovered that deep-sea bacteria dissolve carbon-containing rocks, releasing excess carbon into the ocean and atmosphere. The findings ...
Streams more vulnerable to stressors such as climate change than previously thought（图）
Streams more vulnerable stressors climate change previously thought
2021/3/19
Water is constantly on the move: through the air, through waterways, and underground. Life depends on a consistent supply of water, and details about its journey are necessary for understanding and ma...
Wildfires may have larger effects on cloud formation and climate change than thought（图）
Wildfires effects cloud formation climate change thought
2021/3/19
As the frequency and size of wildfires continue to increase worldwide, new research by Carnegie Mellon University scientists shows that the chemical aging of the particles emitted by these f...
Population of critically endangered Bahama Oriole is much larger than thought（图）
Population critically endangered Bahama Oriole much larger than thought
2021/3/12
On a low-lying island in the Caribbean, the future of the critically endangered Bahama Oriole just got a shade brighter.A U.S. National Science Foundation-funded study led by researchers at the&#...
Coastal permafrost more susceptible to climate change than previously thought（图）
Coastal permafrost susceptible climate change previously thought
2020/10/30
If you flew from the sea toward the land along the north slope of Alaska, you would cross from the water, over a narrow beach, and then to the tundra. From the air, that tundra would look like a lands...
Tectonic plates started shifting earlier than previously thought（图）
Tectonic plates started shifting previously thought
2020/5/9
An enduring question in geology is when Earth's tectonic plates began pushing and pulling in a process that helped the planet evolve and shaped its continents into those that exist today. Some researc...
Microplastics million times more abundant in the ocean than previously thought（图）
Microplastics million times more abundant ocean previously thought
2019/12/20
Nothing seems safe from plastic contamination. A new study by NSF-funded researchers at the Scripps Institution of Oceanography suggests there could be a million times more pieces of plastic in the oc...
Nanoparticles may have bigger impact on the environment than previously thought（图）
nanoparticle environment bigger impact on
2019/10/17
Over the last two decades, nanotechnology has improved many everyday products, from microelectronics to sunscreens. Nanoparticles (particles just a few hundred atoms in size) are ending up in the envi...
Earth's last magnetic field reversal took far longer than once thought（图）
Earth magnetic field reversal took longer once thought
2019/10/21
Earth's magnetic field seems steady and true -- reliable enough to navigate by. Yet, largely hidden from daily life, the field drifts, waxes and wanes.The magnetic North Pole is currently shifting tow...
Ancient Sharks Likely More Diverse Than Previously Thought（图）
Ancient Sharks More Diverse Previously Thought
2018/1/31
Sharks have a reputation as ravenous hunters and apex predators, but new analysis of fossil records shows that some of the earliest sharks might have been filter feeders, taking in water through their...
Earth’s Tectonic Plates Are Weaker Than Once Thought, According to Research by Penn Geologists（图）
Earth’s Tectonic Plates Weaker Than Once Thought Penn Geologists
2017/10/25
No one can travel inside the earth to study what happens there. So scientists must do their best to replicate real-world conditions inside the lab.“We are interested in large-scale geophysical process...
Shaking up the fish family tree:'Living fossil' not as old as we thought（图）
shaking up the fish family tree living fossil as old as we thought
2017/9/19
Polypterids are weird and puzzling African fish that have perplexed biologists since they were discovered during Napoleon's expedition to Egypt in the late 1700s.Often called living fossils, these eel...
DNA links male,female butterfly thought to be distinct species（图）
DNA links male female butterfly distinct species
2017/9/1
Researchers recently discovered what was thought to be a distinct species of butterfly is actually the female of a species known to science for more than a century.An international team of nine butter...
Study finds Earth’s magnetic field ‘simpler than we thought’
Earth’s magnetic simpler than we thought
2017/7/24
Scientists have identified patterns in the Earth’s magnetic field that evolve on the order of 1,000 years, providing new insight into how the field works and adding a measure of predictability to chan...