How many Bob Barrs did the Libertarians nominate for president?

1. From this June '08 link:

Barr said in no uncertain terms: “Global warming is a myth.”

2. From a 7/17/08 Bob Barr statement:

Former Vice President Al Gore and I have met privately to discuss the issue of global warming, and I was pleased and honored that he invited me to attend the "We" Campaign event. Global warming is a reality as most every organization that has studied the matter has concluded, whether conservative-leaning, liberal oriented or independent. I am, however, also aware that scientists differ on its causes, impact and remedies. I remain firmly committed to free market solutions and innovations to address this issue; not tax-driven policies.

I commend Mr. Gore for his efforts and leadership in this area...