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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 10/21-27/2009

October 29, 2009, 5:21 AM

The SI/USGS GVP site is back up and running - and they've posted a new weekly volcano activity report. Enjoy!

Highlights include:
  • Nevado del Huila in Colombia has been showing signs that a new eruption might be starting. Seismicity has increased and minor ash fall has been reported, leading to an increase in the alert level at the volcano to "orange" (high).
  • Ebeko in the Kuril Islands off Russia and Japan produced a ~8.8 km / 29,000 foot ash plume.
  • Thermal images of the crater at El Reventador in Ecuador show that hot material is filling in the dome complex - this followed ash-and-steam explosions earlier in the week.
  • Santa María's Santiaguito (Guatemala) dome produced ash fall, avalanches and was strongly degassing over the last week.
  • White and grey plumes reached up to ~4 km / 13,500 feet at Colima in Mexico.
 

SI/USGS Weekly Volcano Acti...

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