artificial trees, definition of

Carbon is the chemical element with symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. There are three naturally occurring isotopes, with 12C and 13C being stable, while 14C is radioactive, decaying with a half-life of about 5730 years. Carbon is one of the few elements known since antiquity. The name "carbon" comes from Latin language carbo, coal.

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• Klaus Lackner’s Artificial Trees Soak Up CO2 Emissions Faster Than Plants
  As news breaks that global carbon dioxide levels are at an all-time high, one scientist is developing "artificial trees" to help cleanse the air and reduce greenhouse gas pollution...
• 100,000 Synthetic Trees Could Help Combat Climate Change
  The field of geo-engineering has launched all kinds of outlandish ideas for combating climate change, from dumping iron into the world’s oceans to shooting mirrors into space...