Red sprites, secondary jets and newly discovered green afterglow called "ghosts" triggered by red sprites. A dozen vibrant red sprites were recorded on this evening and only two events had the green afterglow.... continue reading
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Youtube: Modern cities are designed for cars. But the city of Barcelona is testing out an urban design trick that can give cities back to pedestrians.
posted by RedSky 7 years 8 months ago • 817 views • 5:31- 1