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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 4/29-5/5/2009

May 6, 2009, 7:16 PM

All the eruptions fit to print from the Smithsonsian/USGS GVP Weekly Report.

A few highlights (not including Redoubt, Rinjani and Slamet):
  • Multiple ash plumes from Galeras (Colombia), some producing noticeable ash fall up to 35 km from the vent.
  • The Alert Level at Anak Krakatau, Indonesia was raised to 3 (out of 4) after a sharp increase in the number of explosions.
  • The Alert Level at Cleveland in Alaska was lowered from Yellow to "Unassigned" (no Green for Cleveland as there is no real-time seismic network for the volcano, thus no "background levels" to compare.)
  • Ebeko in Russia continues to produce ash plumes that reach 2-3.5 km / 6-10,000 feet.
  • Incandescence, gas emissions and 2.4 / 8,000 foot ash plumes continues to be observed from the Tavurvur vent at Rabaul, Papua New Guinea.

SI/USGS Weekly Volcano Acti...

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