After a nor’easter in 2018 pushed flood waters within 6 inches of the Harbor Towers condominiums’ lobby, trustees decided they could no longer ignore the effects of climate change.  A $20 million project this year will bolster the 40-story luxury skyscrapers’ ground floor coastal defenses, adding permanent glass and concrete flood barriers between 24 building columns to protect the ground floors and subterranean mechanical rooms. Next month, work will begin on the largest-scale project to protect a Boston residential property from sea level rise.   Read the article…………………………….