Chemical pollutants have been responsible for affecting the reproductive organs of fish, alligators and polar bears, preventing them from producing babies. Chemical pollution in the environment also affects humans - 46 US states have issued warnings against eating local fish because of dioxin contamination, and in Europe, human breast milk passes on more dioxin to our babies than is legally allowed for cow's milk. Despite this, the amount of pesticide sprayed on our crops around the world has increased 26 times in the last 50 years.

Species living in water are often most strongly affected because water spreads pollution easier than land, and because we often dump our pollution into water. Global warming will affect every species on Earth to some extent, and although some species will thrive in warmer climates, many will not. Coral reefs have already been very hard hit by climate change, and polar bears have received the double-whammy of climate change and chemical pollution.

Most human activities produce some waste products, but it is important to make sure that we have as little pollution as possible. Many people are switching to 'clean technology'. That means having the same benefits from our modern life-style without the pollution. Electric cars, environmentally sensitive washing powders and solar-powered energy are examples. Less pollution is not only good for wildlife and nature - human health benefits from less pollution as well. That means lower medical bills, and a better quality of life.