Earth Day is here once again.

Many accounts are taking the opportunity to inform the public about climate change.

The UNEP released a troubling statistic from the Lung Association.

Their state of the air report found that 4 in 10 Americans live in counties that have unhealthy pollution levels.

Al Gore also warned of the dangerous levels of pollution.

He tweeted, “each day, we pump another 162M tons of GHG pollution into our atmosphere.”

Professor Katharine Hayhoe also warned of the dangers of climate change.

“The faster we cut our emissions and take carbon out of the atmosphere, the less suffering there will be,” she wrote.

The EPA also released a video to show what the Administration is doing against climate change.