According to CleanTechnica, football is the world's most popular sport by a wide margin, with an estimated 3.5 to 4 billion fans. Cricket follows with about 2.5 billion, and basketball with about 2.2 billion.
The article's headline, "Corrupt Oil Money & Football (Soccer)," signals that the sport's enormous reach is relevant to climate and energy discussions. However, the provided excerpt does not go beyond these audience figures, so the specific allegations or mechanisms are not detailed here.
The significance lies in the scale: a sport with billions of followers offers a uniquely large platform, which is why the source links it to concerns about oil money corruption. Readers seeking the full analysis would need to consult the original article.