Water, land, the air we breathe and several other entities can become polluted. Air pollutants may be natural or man-made and may take the form of solid particles, liquid droplets or gases. Water pollution can come from sewage treatment plants, factories, ships, agricultural runoff, mining activities and paved roads, and there are numerous other sources of different types of pollution.
We can always take action against pollution: in cleaning up what's existing and, more importantly, preventing more. We can do that by changing how we manufacture as well as how we behave: reduce how much you use, reuse what's left when you're done, and recycle what you can't reuse. Policy has been enacted in the U.S. to prevent and reduce pollution at its sources. (Source: EPA / Photo: Flickr)

French theme park teaches birds to collect litter

China's forest city will soon gobble up carbon

Dominican Republic crippled by waves of trash

The air quality in some national parks isn't any better than in major cities

Taj Mahal threatened with demolition

Floating park built from recycled plastic waste debuts in the Netherlands

The worst everyday air pollutants and what they do to our bodies

Why you should kick the plastic straw habit

Earth's ozone layer still in trouble, study finds

Historic DC cemetery doubles as pollution-absorbing sponge

Making the case for the electric school bus

Ikea kicks single-use plastics to the curb