A protester holds a sign reading "The Oceans Are Rising But So Are We" at an Amazon employee walkout in Seattle, as part of the Global Climate Strike on Sept. 20, 2019. At some companies, employees are putting increasing pressure on their bosses to act on climate change.

Pressure is mounting on CEOs as everyone from investors to employees sounds the alarm about the climate crisis. Some companies are responding, but even ambitious targets won’t be enough on their own.

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