From firestorms and fatal heat waves to flooding and droughts, climate events are accelerating. Each one is forcing more focused attention on finding strategic solutions to a global concern—and quickly. Businesses are stepping up to meet this daunting challenge. By closely examining their environmental footprints, setting ambitious carbon-emission reduction targets and better empowering stakeholders through transparent communication, many for-profit organizations are embracing sustainability as a core philosophy. The result is more widespread ambition than ever before to make real and meaningful shifts to how—and why—they do business. Experts say there is no time to lose.