As we celebrate Earth Week, not only is it important to think about the tough environmental issues facing our planet, we think it's also important to laugh just a little bit.

And so we're unveiling the next video in our "Mr. Coal Guy" series, which takes a fun tone with a serious topic – the health effects of coal. We'll let the robot do the talking here.

While it's fun to laugh a bit, this isn't too far a stretch. The coal industry is doing everything it can to keep polluting our air and water and significantly affecting public health. They don't want to clean up, King Coal wants to keep taking advantage of loopholes pollution protection – if they can't block the safeguards all together. They also want to block clean energy progress. Coal will say anything!

For Earth Week, join us in taking the pledge to move beyond coal.

-- Heather Moyer, Sierra Club Media Team