Annual sustainability report shows Johns Hopkins has reduced environmental impact while growing operations

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More than a decade ago, Johns Hopkins made a commitment to reduce its greenhouse gas emissions by 51 percent by 2025.

Since making that promise, the institution has grown by 11 percent. That's roughly 1.3 million additional square feet to power—about half the square footage of the Empire State Building.

So how does a growing enterprise like Johns Hopkins maintain its commitment to reducing its carbon footprint, while still increasing its operations?