The richest and third-richest men in the world made a surprise visit to an oil-sands operation in the Canadian province of Alberta on Monday. Investor Warren Buffett and Microsoft founder Bill Gates, who are said to have a combined worth of $120 billion, “were exercising curiosity, basically saying, ‘Wow, this is neat,'” says Greg Stringham of the Canadian Association of Petroleum Producers. Buffett has recently said he is interested in investing in oil sands; he invests in American oil company ConocoPhillips, which owns significant oil sands assets. If the bigwigs are interested in investing in alternatives to conventional oil, we could suggest better energy sources than the environment-polluting, cancer-causing, duck-killing monstrosity that is the oil sands.