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A word about Big Ideas and Themes — The architecture of Big Think

Big ideas are lenses for envisioning the future. Every article and video on bigthink.com and on our learning platforms is based on an emerging “big idea” that is significant, widely relevant, and actionable. We’re sifting the noise for the questions and insights that have the power to change all of our lives, for decades to come. For example, reverse-engineering is a big idea in that the concept is increasingly useful across multiple disciplines, from education to nanotechnology.

Themes are the seven broad umbrellas under which we organize the hundreds of big ideas that populate Big Think. They include New World Order, Earth and Beyond, 21st Century Living, Going Mental, Extreme Biology, Power and Influence, and Inventing the Future.

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SI/USGS Weekly Volcano Activity Report for 4/1-7/2009

April 8, 2009, 5:44 PM

Your weekly dose of volcanic activity. As a sidenote, you can now get placemarks for the weekly activity report via Google Earth. Select "Google Earth Placemarks" from the SI / USGS Weekly Volcanic Activity Report page.

Highlights of this week's report:
  • New explosions at Ebeko. See my article today for more details.
  • More evidence of increased activity at Nyamuragira and Nyiragongo, Congo. One interesting note is that scientists from the Goma Volcano Observatory noted that earthquake swarms usually precede eruption by 3-5 months.
  • I've seen very little news about this, but Pacaya in Guatemala has been experience some intense Strombolian eruptions and has produced multiple lava flows.
  • Minor ash and pulsating steam plumes at Galeras, Colombia
  • Light ashfall in towns 3-5 km from the Tavurvur vent at Rabaul, Papau New Guinea.
  • Sakurajima, Japan produced a 7,000-10,000 foot / 2-3 km ash plume.
 

SI/USGS Weekly Volcano Acti...

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