In this paper, we examine the emergence of resources. Our analysis of technological capability acquisition by global U.S.-based chemical firms shows that the emergence of resources is inherently evolutionary. We find that path-creating search that generates resource heterogeneity is a response to idiosyncratic situations faced by firms in their local searches. Two such idiosyncratic situations—technology exhaustion and expansion beyond national markets—trigger firms in our sample to create unique innovation search paths. We also find that along a given path firms experiment in order to find the correct investment—in fact, some organizations seem to take a step backward for two steps forward—further demonstrating the evolutionary nature of the resource creation process. Copyright © 2004 John Wiley & Sons, Ltd.