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Unsolved Problems

http://mathworld.wolfram.com/UnsolvedProblems.html?affilliate=1 There are many unsolved problems in mathematics. Some prominent outstanding unsolved problems (as well as some which are not necessarily so well known) include 1. The Goldbach conjecture . 2.
http://www.popsci.com/technology/article/2012-03/video-800-pounds-and-45-feet-long-largest-ever-paper-airplane-takes-flight Arturo's Desert Eagle Ascends Pima Air & Space Museum Arturo Valdenegro, 12-year-old Tucson resident, made paper aviators everywhere look minuscule by comparison last week. In the skies over the Sonora desert in Arizona, the Pima Air & Space Museum launched the biggest paper airplane ever constructed --a paper airplane based on Valdenegro’s design--into the sky, accelerating it to speeds topping 100 miles per hour before it came crashing down (as paper airplanes do).

Video: At 800 Pounds and 45 Feet Long, The Largest-Ever Paper Airplane Takes Flight | Popular Science

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323,899,142 occurrence records from 370 data publishers - GBIF Portal

Welcome to the GBIF Data Portal Access 396,026,747 data records (345,561,101 with coordinates) shared via the GBIF network. To learn how to use this site, please see About .