Air:
WHO says 3m people a year are killed by outdoor air pollution. One study says 7-20% of cancers are attributable to poor air and pollution in homes and workplaces.
Land:
Contaminated land is a problem in industrialised countries, where former factories and power stations can leave waste like heavy metals in the soil. It can also occur in developing countries, sometimes used for dumping pesticides. Agriculture can pollute land with pesticides, nitrate-rich fertilisers and slurry from livestock. And when the contamination reaches rivers it damages life there, and can even create dead zones off the coast, as in the Gulf of Mexico.
Affected species include polar bears - so not even the Arctic is immune.
Water:
Chemical pollution was blamed for killing fish in Kankaria Lake in Ahmadabad, India. A recent study detailed the plastic litter that pollutes the marine environment.
Not a task for regulation?
Previous generations worked on the assumption that discarding our waste was a proper way to be rid of it, so we used to dump nuclear materials and other potential hazards at sea, confident they would be dispersed in the depths.
About 70,000 chemicals are on the market, with around 1,500 new ones appearing annually. At least 30,000 are thought never to have been comprehensively tested for their possible risks to people.
The above are extracts copied from this article.

WHO says 3m people a year are killed by outdoor air pollution. One study says 7-20% of cancers are attributable to poor air and pollution in homes and workplaces.
Land:
Contaminated land is a problem in industrialised countries, where former factories and power stations can leave waste like heavy metals in the soil. It can also occur in developing countries, sometimes used for dumping pesticides. Agriculture can pollute land with pesticides, nitrate-rich fertilisers and slurry from livestock. And when the contamination reaches rivers it damages life there, and can even create dead zones off the coast, as in the Gulf of Mexico.
Affected species include polar bears - so not even the Arctic is immune.
Water:

Chemical pollution was blamed for killing fish in Kankaria Lake in Ahmadabad, India. A recent study detailed the plastic litter that pollutes the marine environment.
Not a task for regulation?
Previous generations worked on the assumption that discarding our waste was a proper way to be rid of it, so we used to dump nuclear materials and other potential hazards at sea, confident they would be dispersed in the depths.
About 70,000 chemicals are on the market, with around 1,500 new ones appearing annually. At least 30,000 are thought never to have been comprehensively tested for their possible risks to people.
The above are extracts copied from this article.