We uncover phantom cities defined by riverine logic: buried systems (medieval rivers and culverted canals), drowned landscapes (post-glacial river basins now submerged), and canalized rivers forgotten in the city’s routine. From Perugia’s 13th-century aqueduct to London’s Lost Rivers and modern restoration efforts, archaeology, geophysics, and proactive urban design are reviving these invisible streams to inform resilient futures. Note: This podcast was AI-generated, and sometimes AI can mak...
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We uncover phantom cities defined by riverine logic: buried systems (medieval rivers and culverted canals), drowned landscapes (post-glacial river basins now submerged), and canalized rivers forgotten in the city’s routine. From Perugia’s 13th-century aqueduct to London’s Lost Rivers and modern restoration efforts, archaeology, geophysics, and proactive urban design are reviving these invisible streams to inform resilient futures. Note: This podcast was AI-generated, and sometimes AI can mak...
Marble Berry: The Spiral of Blue Beauty in Pollia condensata
Intellectually Curious
5 minutes
3 days ago
Marble Berry: The Spiral of Blue Beauty in Pollia condensata
A deep dive into Pollia condensata, the marble berry, whose electric blue hue arises not from pigment but from nanoscale architecture. We uncover how densely layered cellulose microfibrils form a twisted photonic crystal that reflects a narrow blue band through Bragg reflection, with cell-to-cell pitch variations creating a mosaic of blue, green, and purple speckles. The berry’s left- and right-handed spirals also produce dual polarization colors, making its color both brilliantly vivid and a...
Intellectually Curious
We uncover phantom cities defined by riverine logic: buried systems (medieval rivers and culverted canals), drowned landscapes (post-glacial river basins now submerged), and canalized rivers forgotten in the city’s routine. From Perugia’s 13th-century aqueduct to London’s Lost Rivers and modern restoration efforts, archaeology, geophysics, and proactive urban design are reviving these invisible streams to inform resilient futures. Note: This podcast was AI-generated, and sometimes AI can mak...
