Scientists grapple over sunspot cycle
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Scientists are deadlocked over the severity of the next sunspot cycle, which could produce powerful solar storms that can disrupt communication systems on Earth.
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Scientists at a global warming conference say they see potential triggers for runaway climate change but admit that when and how these notional doomsdays may be unleashed are debatable or quite unknown.
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Scientists have struggled for years to make electricity from the sunâs light, at a cost competitive with other power sources. Now they are close, using the sunâs heat instead.
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It's a mystery even for researchers at the Smithsonian Institution:
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U.S. chemists say they've used a process that creates bubbles as hot as the surface of the sun to make hollow iron oxide nanospheres.
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Scientists are hopeful they can retrieve particles of solar wind from a capsule that crashed last week.
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Locked away in fossils is evidence of a sudden solar cooling. Kate Ravilious meets the experts who say it could explain a 3,000-year-old mass migration - and today&#39;s global warming.
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Physicists have dreamt about it for decades: harnessing the fusion process that powers the sun to make clean, safe and limitless energy.Comment
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Scientists are puzzled, but the phenomenon seems to fit the latest global-warming models.
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An international team of astronomers believe they have solved a mystery that has been perplexing scientists for 100 years -- the origin of cosmic rays.
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While human activity probably isn&#39;t directly responsible for the 2003 heat wave that caused thousands of deaths in Europe, British researchers say human influence on the
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SAN FRANCISCO, Calif. -- Hunting for traces of life on Mars calls for two radically different strategies, says Arizona State University professor Jack Farmer.
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Astronomers  have pieced together what  appears to be the first direct evidence that solar storms can wreak  havoc with comets, destroying the ion tails of icy wanderers&nbsp;in a collision  of highly charged particles.&nbsp;
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A proposed solar telescope could help scientists gain a clearer picture of the link between sunspots and solar storms, which can spur power outages on Earth.
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With eruptions from a large and complex sunspot group sending a series of solar storms to Earth, the stage is set for spectacular displays of the Northern Lights or Aurora Borealis this week.
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A scientific scramble is under way to clarify whether the erosion of the worldâs most vulnerable ice sheets can continue to accelerate.
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Scientists try to figure out how far off the next ice age is.