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  • Irish Chronicles Document Links Between Volcanoes and Weather
    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong corr...Read more

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    Irish Chronicles Document Links Between Volcanoes and Weather

    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong correlation between the occurrence of volcanic eruptions and extreme cold weather in Ireland over a 1200 year period. Data analyzed in this study cover the period from 431 to 1649, during which time up to 48 volcanic eruptions are identified in Greenland ice core records through deposition of volcanic sulfate in annual layers of ice. You can find the study (open access), published on 6 June 2013 in IOP Publishing's journal Environmental Research Letters, at http://iopscience.iop.org/1748-9326/8/2/024035/article. Find out more about how volcanoes can influence climate.
  • EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US
    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, acco...Read more

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    EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US

    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, according to the National Weather Service in Norman Oklahoma. The tornado, which remained on the ground for 40 minutes and reached 2.6 miles across (4.2 km), took the lives of 18 people including storm chasers Tim Samaras, Paul Samaras and Carl Young. For more information on the tornado, visit http://ow.ly/i/2hfDG.
  • Atmospheric CO2 Level Tops 400 ppm
    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm rep...Read more

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    Atmospheric CO2 Level Tops 400 ppm

    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm repeatedly. Daily levels of CO2 can vary due to weather, and there are seasonal trends as well. The level of atmospheric greenhouse gases continues to increase, now over 120 ppm since the Industrial Revolution began. For more on the Keeling Curve, see http://keelingcurve.ucsd.edu/. Find out more about greenhouse gases and warming.
This is a map of Venus.
Click on image for full size
NASA

Alpha Regio

Alpha Regio and Ovda Regio are examples of what is known as a "Plateau Highland" of Venus. Among the volcanic features of Alpha Regio is Eve Mons.

Unlike volcanic rises, plateau highlands have few volcanoes, lava flows are relatively rare, small volcanic domes do not occur with the abundance seen in volcanic rises, and no shield volcanoes are to be found. They have steep margins, very similar to a terrestrial continental shelf, as compared to the gently increasing slope of the volcanic rises. They also contain the complex broken terrain called tessera. Tessera may provide evidence that the planet's surface is in motion.


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Science, Evolution, and Creationism

How did life evolve on Earth? The answer to this question can help us understand our past and prepare for our future. Although evolution provides credible and reliable answers, polls show that many people turn away from science, seeking other explanations with which they are more comfortable....more

The Venus Lithosphere

Like the Earth's lithosphere, the lithosphere of Venus is the not-so-rigid part of the crust of Venus which is cooler than the interior of Venus, somewhat like the film on top of a cup of hot cocoa. Unlike...more

Volcanic Rises

Volcanic rises are thought to be formed by plumes, in a similar fashion to island formation on Earth. On Venus, there are three types of volcanic rises: Rift-Dominated Rises These are rises that contain...more

Venus Domes

These domes may look a little bit like craters, but they are really flat-topped mountains. Mt Pelee in Martinique, West Indies, and Lassen Peak and Mono domes in California are examples of terrestrial...more

Venus Tessera

Tessera is a unique feature of Venus, and is also known as "complex ridged terrain". These features are found on some of the Venus Plateau Highlands. Tessera is created is by a shortening of the lithosphere....more

Exploratour - Volcanoes of the Solar System

Venus has many volcanoes. The map to the left shows two of the them on the 'continent' of Venus called Beta Regio. Other volcanoes of Venus include Eve Mons, Sacajawea, and Colette. This is page 9 of...more

Ishtar Terra

Ishtar Terra is one of the Plateau Highlands of Venus, is found near the north pole, and is about the size of the continental United States. Ishtar Terra contains the four main mountain ranges of Venus...more

Alpha Regio

Alpha Regio and Ovda Regio are examples of what is known as a "Plateau Highland" of Venus. Among the volcanic features of Alpha Regio is Eve Mons. Unlike volcanic rises, plateau highlands have few volcanoes,...more

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We now offer the Cool It! card game in our Science Store. Cool It! is the new card game from UCS that teaches kids about the choices we have when it comes to climate change.

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