Animals photo
photograph by Matt Nager
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In the 1990s, animal scientist and autism advocate Temple Grandin revamped the livestock industry to improve animal welfare and food safety—which meant lower costs too. Today, almost half of the cattle in North America is processed through a system she designed. Now, she’s focused on a new challenge: how to reverse the damage done by decades of overly selective breeding.

In her own words:

–As told to Lois Parshley