At the Lowline Lab, Dan Barasch and James Ramsey test the "remote skylight" technology that will bring natural sunlight to their proposed underground park. Photo 9 of 10 in The Lowline Lab by Heather Corcoran

The Lowline Lab

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At the Lowline Lab, Dan Barasch and James Ramsey test the "remote skylight" technology that will bring natural sunlight to their proposed underground park.