BALTIMORE — Floating fences in India. Whimsical water- and solar-driven conveyor belts with googly eyes in Baltimore. Rechargeable aquatic drones and a bubble barrier in The Netherlands. These are ...
At Bartram’s Gardens floating dock in Southwest Philadelphia, a simple looking trash can was lowered into the Schuylkill River on Tuesday afternoon. This one was different from what you see lining the ...
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