Alarmist nut James Hansen weighs in again [PDF]:

Burning all fossil fuels would destroy the future of young people and the unborn. Coal is the critical issue. Coal is the main cause of climate change. It is also the dirtiest fossil fuel. Air pollution, arsenic, and mercury from coal have devastating effects on human health and cause
birth defects.
The science is clear. We must have a moratorium on new coal plants and phase out existing ones within the next 20 years.

Congressman Ed Markey: [Still pushing the greatest scientific fraud ever]

...There is no time to waste. A report released last week by the Obama Administration makes clear that global warming is already impacting all regions of the United States. We must take action today to avoid catastrophic impacts in the future.
...
This historic piece of legislation will transform our energy system and create a clean, secure economy that will generate millions of new jobs as we deploy energy efficiency and renewable energy technologies across the country. Waxman-Markey will provide the most extensive regulation of coal and other fossil fuels ever undertaken by the Environmental Protection Agency. Polluters will no longer be able to dump carbon dioxide into the atmosphere for free.
...
The latest climate science underscores the urgency to act now to reduce global warming pollution.