Parts of San Rafael, a city just north of San Francisco, are sinking about half an inch per year. That might not sound like much, but altogether, it has meant that some neighborhoods — like the Canal District that borders the bay — have sunk three feet, placing them at greater risk of flooding from sea level rise.
San Rafael isn’t alone. Cities around the world are threatened by rising sea levels, with 300 million people at risk of routine flooding by 2050. The cost of building seawalls to hold the waters back could top $400 billion in the U.S. alone.
A new startup is proposing an alternative: raise the city instead.
Terranova is building robots that will inject a slurry of wood waste into the ground, slowly lifting the land to eliminate hist
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