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41,000-year cycle in the Earth's tilt matches up with peak volcanic activity. 
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Technique could help answer questions about the life cycle of an atom.
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About every 11 years the magnetic field on the sun reverses completely – the north magnetic pole switches to south, and vice versa. This flip coincides with the greatest solar activity seen on the sun in any given cycle, known...
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Cicadas incubate underground for long years. They emerge every 13 or 17 years to mate and make annoying noises when people are trying to sleep. Both 13 and 17 are prime numbers.
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A mysterious cycle of booms and busts in marine biodiversity over the past 500 million years could be tied to a periodic uplifting of the world's continents, scientists report in the latest issue of the Journal of Geology.
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A powerful M9-class solar flare erupted early Jan. 23 (GMT) has triggered the strongest radiation storm since 2005, NOAA says. The solar flare has also triggered a geomagnetic storm on Earth and could amplify northern lights displays.
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The seasonal growth of plants—both on land and in the ocean—is one of the most striking patterns visible on Earth from space. This green "pulse" of life is intimately connected with the planet's carbon cycle and changing climate. In this data visualization, watch plants grow and die with the seasons and learn about the resulting effects on carbon and climate.
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Scientists know that plants can actually 'sense' day length, and 'schedule' their growth to coincide with specific environmental conditions.
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The story of what might be the first international debt crisis bears haunting similarities with today's; but a somber difference remains.
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In this stunning picture of the giant galactic nebula NGC 3603, the crisp resolution of the NASA/ESA Hubble Space Telescope captures various stages of the life cycle of stars in one single view.
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At the foundation of effective management for any organization is the fundamental truth that all organizations, like all living organisms, have a lifecycle and undergo very predictable and repetitive patterns of behavior as they grow and develop. At each new stage of development an organization is faced with a unique set of challenges. How well or poorly management addresses these challenges, and leads a healthy transition from one stage to the next, has a significant impact on the success or failure of their organization.
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In the first study of its kind, researchers have linked a natural global climate cycle to periodic increases in warfare. The arrival of El Niño, which every three to seven years boosts temperatures and cuts rainfall, doubles the risk of civil wars across 90 affected tropical countries, and may help account for a fifth of worldwide conflicts during the past half-century, say the authors. The paper, written by an interdisciplinary team at Columbia University's Earth Institute, appears in the current issue of the leading scientific journal Nature.
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Advocates of 'cliodynamics' say that they can use scientific methods to illuminate the past. But historians are not so sure.
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In a new study, a team of physicists has used concepts from statistical physics to identify some characteristic behaviors of pre-bankrupt stocks that differ significantly from stocks that don't become bankrupt. The approach may eventually help investors forecast stock bankruptcies weeks or months in advance.
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When astronomers add up all the gas and dust contained in ordinary galaxies like our own Milky Way, they stumble on a puzzle: There is not nearly enough matter for stars to be born at the rates that are observed. Now, a team of astronomers led by Kate Rubin of the Max Planck Institute for Astronomy in Germany has used the W. M. Keck Observatory to find evidence of just such fountains in distant spiral galaxies.
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Researchers explain the molecular linkage between the circadian clock and the deadly heart rhythms that lead to sudden death, which is more likely to occur shortly after waking in the morning and in the late night.
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To better predict the future, Jack Williams is looking to the past.
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Determining the cell cycle position of a population of cells, or understanding how signals affect proliferation, can be readily measured by flow cytometry using this protocol.
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A study at the University of Alcalá, Spain has compared the employment crisis of 1991-1994 with the current crisis from 2007 to 2010, as well as the labour reforms that took place in 1994 and 2010 respectively.
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Creatures on Earth have annual cycles consisting of life history stages of breeding, moult and migration. For some, moon cycles influence their periodic behavior, particularly in the case of birds.
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Aging mechanisms in worms’ reproductive cells differ compared with rest of body...
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If you're convinced that the current cycle of the boom and bust economy is due to the collapse of collateralised debt obligations secured on oversold mortgages that destablised the European market ...
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Activity on the Sun is due to reach its peak around early 2014, so expect more flares, eruptions and ejections for the next few years. Early predictions say the estimated Sun activity between 2020-2030 may not be nearly as intense as the 2000-teens.
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There isn’t that great of a value-add to quantification as such, but with a mathematical understanding of a topic one can engage in an algebra of mental manipulations so as to construct models with which one can project other facts.
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