Criticism of biofuels is certainly fair game (such as palm-oil-based biodiesel from Indonesia's rainforest, which actually hurts the environment more than it helps it), but there is an obligation to stick to the facts.

FORBES: Khosla Speaks

According to the latest edition of its Food Price Watch, prices of food rose 15% from October to January, which hurts the poor that much more.

FORBES: Trading Food Inflation

That hurts profits, which causes stocks to fall even more.

NPR: Drop In Oil Prices Helps Send Dow Lower, Too

Critics, such as New Jersey Governor Chris Christie, however, are arguing that trading schemes are nothing more than a tax on electricity, which hurts residential customers and businesses.

FORBES: California's Carbon Caps are Contentious but Coming